For a locking hitch pin and trailer lock set, I’d start with the RETRUE Keyed Alike Trailer Hitch Lock Set as the best overall fit for buyers who want a coordinated kit, while Master Lock 2848DAT stands out for a familiar two-piece receiver-and-coupler setup and TowWorks 79632 for extra-long pin reach. The main tradeoffs are whether you need to secure both the trailer and receiver, how closely the pin dimensions match your hitch, and how many locks you want keyed alike. Some picks cover a broad range of tasks; others focus on a single receiver pin or on longer-span applications. I compare those differences below so you can choose a set that fits your equipment rather than buying more locks than you need.
Get audio and creator gear delivered free — and shop member deals
- Fast, free delivery on millions of items
- Access to Prime Big Deal Days deals on October 6–7
- Prime Video, Amazon Music and more included
Complete the kit
Key Takeaways
- Two-piece kits offer broader coverage: RETRUE, Master Lock 2848DAT, and the METOWARE and CZC AUTO hitch-and-coupler sets pair receiver security with a way to lock a trailer coupler.
- Pin length separates the TowWorks extended-span models: the 79632, 79633, and 79634 sets specify a 3-1/4-inch span, which may suit setups where a standard pin does not reach.
- Pack size is not the same as lock coverage: METOWARE’s four-pack and TowWorks’ multi-packs provide multiple receiver locks, while a hitch-and-coupler set secures two different connection points.
- Receiver fit needs a direct check: several products list 5/8-inch pins for Class III/IV or 2-inch and 2.5-inch receivers, but the receiver opening and required pin span still determine compatibility.
- Keyed-alike convenience has several forms: many listings pair matching keys within a set, while the single Rhino USA pin focuses on one receiver lock rather than a complete trailer lock kit.
| locking hitch pin and trailer lock set | Material | Finish | Pin diameter |
|---|---|---|---|
| RETRUE Keyed Alike Trailer Hit | — | — | — |
| Kohree Trailer Hitch Lock Set | Hardened metal | Black | 5/8 inch |
| METOWARE Trailer Hitch Locks F | Alloy steel | Electroplated | 5/8 inch |
| CZC AUTO Hitch Receiver Pin Lo | Carbon steel | Black electrophoretic paint | 5/8 inch |
| METOWARE Keyed Alike Trailer L | Alloy steel | Black electrophoretic paint | — |
| Trailer Hitch Locks with Keys | High-quality steel | Black coated, rust-resistant | 5/8 inch |
| CZC AUTO Hitch Lock Set | High-strength steel | Powder coated | — |
| Master Lock 2848DAT Key Alike | Stainless steel | Powder coated | — |
| TowWorks 79852 Keyed Alike 5/8 | Steel | Brushed | — |
| Rhino USA 2in Trailer Hitch Pi | Carbon steel | Powder coated | — |
| CZC AUTO Hitch Locking Pin wit | Carbon steel | Electrophoretic paint | 5/8 inch |
| TowWorks 79632 Keyed Alike 5/8 | Alloy steel | Black e-coated on zinc plated | 5/8 inch |
| TowWorks 79634 Keyed Alike 5/8 | — | — | 5/8 inch |
| TowWorks 79633 Keyed Alike 5/8 | — | — | 5/8 inch |
| METOWARE Keyed Alike Trailer L | Electrophoretic-coated steel with zinc-alloy core | — | — |
More Details on Our Top Picks
RETRUE Keyed Alike Trailer Hitch Lock Set, Anti Theft Lock Kit, Black
RETRUE covers more locking points than the receiver-focused Kohree set: it includes a coupler lock, two hitch pins, and a tongue lock, all operated with the same key. That makes it a practical pick for owners who want a coordinated kit for different parts of a trailer rather than one receiver pin. Its adjustable coupler fit covers three common coupler sizes, while the two pin diameters offer more options for matching hitch hardware. The tradeoff is a more involved kit to operate and keep track of than METOWARE’s simpler hitch-and-coupler pair. The stated 120-day warranty is limited, and the product data does not specify exact receiver-size compatibility, so I would verify fit before buying.
Pros:- Includes coupler, tongue, and two hitch-pin locks for broader coverage
- One key operates the included locks
- Adjustable coupler fit covers 1-7/8, 2, and 2-5/16-inch couplers
- Aluminum and high-strength steel construction is described as weatherproof
Cons:- The 120-day warranty is shorter than the 12-month warranty listed for the CZC AUTO two-pack
- The multiple lock types may take more time to fit and operate
- Receiver compatibility is not specified as clearly as on the Kohree or CZC AUTO models
Best for: Trailer owners who want one-key coverage for the coupler, tongue, and more than one hitch-pin size.
Not ideal for: Buyers who need a clearly specified fit for a particular receiver or prefer a simple, quick-to-operate lock.
- Materials:Aluminum and high-strength steel
- Coupler sizes:1-7/8, 2, and 2-5/16 inches
- Locking positions:11
- Hitch-pin diameters:5/8 inch and 1/2 inch
- Hitch-pin lengths:2-4/5 inches and 2-1/5 inches
- Tongue-lock diameter:1/4 inch
- Keying:Locks keyed alike
- Weatherproofing:Weatherproof
- Warranty:120 days
Our verdict“Choose RETRUE if you want a single-key kit spanning several trailer locking points and can confirm the receiver fit first.”
Kohree Trailer Hitch Lock Set, 5/8 Inch, for Class III IV Receivers
Kohree keeps the job focused: its push-to-lock design and 5/8-inch pin target Class III and IV receivers, making it simpler to use than the multi-piece RETRUE kit. That straightforward setup suits owners who mainly need to secure a receiver connection, not lock the coupler and tongue as well. Its stated fit covers 2- to 2.5-inch receivers, and the weatherproof, rust-resistant construction is useful for outdoor towing. Compared with the CZC AUTO two-pack, Kohree is presented as a single receiver-lock solution rather than a keyed-alike pair. The stated keys are not interchangeable, and the instructions to remove and store the lock indoors may make it less convenient for frequent use. Non-standard receivers are also a poor match.
Pros:- Push-to-lock operation simplifies securing the pin
- Designed for Class III and IV receivers from 2 to 2.5 inches
- Hardened metal construction with a black finish
- Weatherproof and described as rust-resistant
Cons:- Keys are not interchangeable
- Product guidance calls for removal and indoor storage after use
- Does not provide the broader coupler and tongue coverage found in the RETRUE kit
Best for: Owners of standard Class III or IV 2- to 2.5-inch receivers who want a straightforward push-to-lock pin.
Not ideal for: Buyers seeking one key for several locks, a coupler lock in the same kit, or a fit for non-standard receivers.
- Material:Hardened metal
- Finish:Black
- Pin diameter:5/8 inch
- Receiver fit:Class III and IV
- Receiver sizes:2 to 2.5 inches
- Weight:2.05 pounds
- Operation:Push-to-lock
- Weather protection:Weatherproof; described as rust-resistant
Our verdict“Pick Kohree for a simple receiver-focused lock on a standard Class III or IV hitch, not for an all-in-one trailer set.”
METOWARE Trailer Hitch Locks Fits Class III & IV 2″ & 2.5″ Receiver (4 Pack)
Four keyed-alike receiver locks make this METOWARE pack the lineup’s choice for owners securing several vehicles, trailers, or spare hitch setups. Each lock uses a 5/8-inch pin and is listed for 2- and 2.5-inch Class III/IV receivers. The rubber O-rings help limit rattling, a practical difference from the coupler-inclusive METOWARE set, which covers a different locking point but does not supply four receiver locks. All-metal construction and an electroplated finish suit repeated outdoor use, but this pack does not secure the coupler itself. The stated 30,000-pound figure is a weight-capacity specification, not a guarantee against theft or a measure of lock strength. Buyers should check receiver dimensions before ordering.
Pros:- Four receiver locks supplied in one pack
- Locks are keyed alike within the set
- Rubber O-rings are included to reduce rattling
- Alloy-steel construction with electroplated finish
Cons:- Does not include a coupler or tongue lock
- Fit is limited to 2- and 2.5-inch Class III/IV receivers
- The stated weight capacity should not be read as a theft-resistance rating
Best for: Owners with multiple compatible trailers or vehicles who want several receiver locks operated by the same key.
Not ideal for: Buyers who need a coupler lock, have nonstandard receiver dimensions, or only need one receiver pin.
- Number of locks:4
- Material:Alloy steel
- Finish:Electroplated
- Pin diameter:5/8 inch
- Pin length:3-1/2 inches
- Receiver fit:2- and 2.5-inch Class III/IV receivers
- Keying:Keyed alike
- Stated weight capacity:Up to 30,000 pounds
Our verdict“Choose this four-pack when you need matching receiver locks across several compatible setups, rather than broader trailer coverage.”
CZC AUTO Hitch Receiver Pin Lock 5/8″ for 2″ & 2-1/2″ Receivers, Keyed Alike
CZC AUTO gives you two receiver locks with one shared key system, a useful middle ground between Kohree’s receiver-focused option and METOWARE’s four-lock pack. The 5/8-inch pins fit listed 2- and 2.5-inch Class III/IV receivers, while the 3.5-inch effective length gives buyers a clear dimension to compare against their hitch setup. Painted carbon steel and rubber key-slot caps address exposure to moisture, and four keys per pack give owners spares. Unlike RETRUE, this set does not add a coupler or tongue lock, so its coverage stays at the receiver. It also has a narrower fit range than a multi-part kit, and buyers with other receiver sizes should skip it. The listed 12-month warranty is a point of difference from RETRUE’s 120-day term.
Pros:- Two locks use a keyed-alike setup
- Includes four keys per pack
- Rubber key-slot caps help shield the keyway from moisture
- 12-month warranty is listed
Cons:- Fits only listed 2- and 2.5-inch Class III/IV receivers
- Does not include a coupler or tongue lock
- Painted carbon steel may require finish care after wear or damage
Best for: Owners with two compatible receiver setups who want matching locks, spare keys, and a stated warranty period.
Not ideal for: Trailer owners looking for a coupler lock in the same purchase or using receiver sizes outside the listed range.
- Pack count:2 locks
- Pin diameter:5/8 inch
- Effective length:3.5 inches
- Material:Carbon steel
- Finish:Black electrophoretic paint
- Receiver fit:2- and 2.5-inch Class III/IV receivers
- Keys:4 per pack; keyed alike
- Warranty:12 months
Our verdict“Choose CZC AUTO if you need two matching receiver locks with spare keys, but not a complete coupler-and-hitch set.”
METOWARE Keyed Alike Trailer Lock Set, 5/8″ Hitch Lock & 1/4″ Coupler Lock
This METOWARE set pairs the two locking points many trailer owners need most: a 5/8-inch receiver lock and a 1/4-inch coupler lock, both keyed alike. It is more targeted than RETRUE’s broader kit, which adds a tongue lock and two pin sizes, but the smaller two-lock combination may be easier to manage for a basic trailer setup. The push-to-lock feature supports quick use, while the rubber sleeve helps protect the trailer finish from contact. Its listed receiver fit is limited to 2- and 2.5-inch openings, so this is not a universal set. The 7,500-pound pull-force figure is provided as a product specification, but it should not be treated as a complete measure of theft protection. Buyers wanting several receiver locks should look at METOWARE’s four-pack instead.
Pros:- Includes both a 5/8-inch hitch lock and a 1/4-inch coupler lock
- Both locks use the same key
- Push-to-lock operation supports quick securing
- Rubber sleeve helps protect the trailer finish
Cons:- Receiver fit is limited to 2- and 2.5-inch sizes
- Does not include a tongue lock or extra receiver locks
- The stated pull-force figure does not describe all aspects of theft resistance
Best for: Trailer owners who want one-key locking for a compatible receiver and coupler without buying a larger multi-lock kit.
Not ideal for: Owners with nonstandard receivers, those needing a tongue lock, or buyers who need several receiver pins.
- Included locks:One hitch lock and one coupler lock
- Hitch-pin diameter:5/8 inch
- Coupler-lock diameter:1/4 inch
- Receiver fit:2- and 2.5-inch receivers
- Material:Alloy steel
- Finish:Black electrophoretic paint
- Span:3-1/2 inches
- Weight:1.3 pounds
- Stated pull force:7,500 pounds
Our verdict“Pick this METOWARE set for simple, shared-key coverage of a compatible receiver and coupler in a compact two-lock package.”
Trailer Hitch Locks with Keys, 5/8″ Pin, 2″ Receiver, Class III/IV, 2 Pack
I’d choose this pair when weather protection and two receiver locks matter more than covering the trailer coupler. Its 5/8-inch pins are made for 2-inch Class III/IV receivers, and the push-to-lock design avoids a separate locking step with the key. The rubber-covered key slots and rust-resistant coating give it a clearer wet-weather focus than the CZC AUTO Hitch Lock Set, whose supplied details don’t mention weather protection. The tradeoff is that this is a receiver-lock pair, not a complete hitch-and-coupler set; the Master Lock 2848DAT includes a coupler lock. The two cylinders are keyed differently, so each lock needs its own key, and the specified receiver fit rules out owners of other receiver sizes. Gloves may also make operation awkward.
Pros:- Two 5/8-inch steel receiver locks are included.
- Push-to-lock design simplifies locking.
- Rust-resistant coating and covered key slots suit exposed towing gear.
- Specified for 2-inch Class III/IV receivers.
Cons:- Different keyed cylinders mean carrying and managing separate keys.
- Does not include a coupler lock.
- Fit is limited to 2-inch receivers, and operation may be difficult with gloves.
Best for: Owners of 2-inch Class III/IV receivers who want two weather-conscious receiver locks for separate towing setups.
Not ideal for: Buyers seeking one key for both locks, a coupler lock, or compatibility beyond 2-inch receivers.
- Pin diameter:5/8 inch
- Receiver size:2 inches
- Receiver class:Class III/IV
- Material:High-quality steel
- Finish:Black coated, rust-resistant
- Number of locks:2
- Locking design:Push-to-lock
- Weather protection:All-weather, waterproof, and dirt-proof
Our verdict“Pick this pair for weather-conscious locking across two 2-inch receivers, but choose the Master Lock 2848DAT if coupler coverage and one-key convenience matter more.”
CZC AUTO Hitch Lock Set, 5/8″ Trailer Hitch Lock, 1/4″ Hitch Coupler Lock
This set makes the most sense when your goal is straightforward: lock both the receiver connection and the coupler without buying separate products. Its 5/8-inch hitch pin is paired with a 1/4-inch coupler lock, giving it broader theft-deterrence coverage than the Trailer Hitch Locks with Keys 2 Pack, which supplies two receiver locks but no coupler lock. High-strength steel and a corrosion-resistant coating add durability, while the listed 3.5-inch effective length gives buyers a dimension to check against their setup. I’d verify receiver and coupler measurements before ordering: the fit guidance is limited, and no weatherproofing is specified. Unlike the keyed-alike Master Lock 2848DAT, the supplied details here don’t confirm that one key operates both locks.
Pros:- Pairs a 5/8-inch receiver lock with a 1/4-inch coupler lock.
- High-strength steel construction.
- Corrosion-resistant coating helps protect the locks.
- Listed dimensions support fit checks before purchase.
Cons:- Receiver and coupler dimensions require careful verification.
- Weatherproof features are not specified.
- Keyed-alike operation is not confirmed in the supplied details.
Best for: Trailer owners who want one set covering a 5/8-inch receiver pin and a 1/4-inch coupler lock, and can confirm their dimensions first.
Not ideal for: Buyers who need documented weather protection, broad fit guidance, or confirmed keyed-alike operation.
- Hitch pin diameter:5/8 inch
- Effective length:3.5 inches
- Coupler lock diameter:1/4 inch
- Maximum span:3/4 inch
- Material:High-strength steel
- Finish:Powder coated
- Item weight:0.48 kg
Our verdict“Choose this set for basic receiver-and-coupler coverage if your measurements match and weather sealing is not a priority.”
Master Lock 2848DAT Key Alike Set with Receiver and Coupler Latch Locks, 2-Piece Set
The Master Lock 2848DAT earns its place for buyers who want a receiver lock and coupler latch lock operated by the same key. That pairing makes day-to-day access simpler than the CZC AUTO Hitch Lock Set, whose supplied details don’t confirm keyed-alike cylinders, and it covers more than the two receiver-only locks in the Trailer Hitch Locks with Keys 2 Pack. The set also lists pick-resistant mechanisms and adjustable components, which can help with usability and resistance to manipulation. Its fit information is less specific, however: the listed 5/8-inch receiver compatibility doesn’t establish a full receiver-size range. The product details also don’t specify weather sealing or corrosion protection, so I’d favor a weather-focused option for equipment left exposed often.
Pros:- Receiver and coupler latch locks are included.
- Keyed-alike design uses one key for both locks.
- Pick-resistant mechanisms are specified.
- Adjustable components and four included keys support shared access.
Cons:- Receiver fit details do not give a complete compatible-size range.
- Weather resistance and corrosion protection are not specified.
- The two-piece set does not provide spare receiver locks like the Trailer Hitch Locks with Keys 2 Pack.
Best for: Owners who want receiver and coupler locks together and value using one key across both.
Not ideal for: Buyers who need clearly documented receiver dimensions or specified weather and corrosion protection.
- Number of pieces:2
- Model number:2848DAT
- Material:Stainless steel
- Finish:Powder coated
- Dimensions:1.2 x 5.4 x 2.3 inches
- Item weight:1.1 pounds
- Compatible receiver size:5/8 inch
- Included keys:4
Our verdict“Choose the Master Lock set if one-key access and coupler coverage lead your priorities, but verify fit and plan for exposure protection separately.”
TowWorks 79852 Keyed Alike 5/8″ Trailer Hitch Lock Set for Adjustable Channel Mounts
For owners of adjustable channel mounts, the TowWorks 79852 stands apart through its two keyed-alike 5/8-inch locks and details aimed at controlling everyday annoyances: rubber O-rings help reduce rattling, while a watertight dust cap protects the lock opening. That makes it a more specialized pick than the Rhino USA 2in Trailer Hitch Pin, which is a single receiver pin for standard 2-inch Class III/IV hitches, not a two-lock set for channel mounts. The push lock and spring clip add a second retention feature, but fit still needs checking: the listing excludes Fastway adjustable hitches and asks buyers to verify dimensions. Its 5/8-inch size also limits flexibility, and unlike the Master Lock 2848DAT, it does not include a coupler lock.
Pros:- Two locks share the same key.
- Rubber O-rings are designed to reduce rattling.
- Watertight dust cap helps keep debris away from the lock.
- Push lock and spring clip provide two retention features.
Cons:- Does not fit Fastway adjustable hitches.
- Buyers must verify hitch dimensions before ordering.
- No coupler lock is included, and the set is limited to 5/8-inch pins.
Best for: Owners of compatible adjustable channel mounts who want two keyed-alike receiver locks with rattle-reducing rings.
Not ideal for: Fastway adjustable hitch owners, buyers with receiver sizes other than 5/8 inch, or anyone seeking a coupler lock in the same set.
- Material:Steel
- Finish:Brushed
- Pin size:5/8 inch
- Number of pieces:2
- Dimensions:8.9 x 2.4 x 1.2 inches
- Outside diameter:0.63 inches
- Color:Black
- Lock features:Push lock, spring clip, rubber O-rings, and watertight dust cap
Our verdict“Choose this TowWorks set for compatible adjustable channel mounts and reduced rattling, not for broad fit or coupler security.”
Rhino USA 2in Trailer Hitch Pin – Patented Locking Receiver Pin
The Rhino USA is the simplest choice here for someone who needs one locking pin for a standard 2-inch Class III/IV hitch, rather than a multi-lock kit. Its solid carbon-steel construction and powder-coated finish suit buyers focused on a single receiver connection, while the weatherproof slide cap helps keep debris away from the lock. Compared with the Trailer Hitch Locks with Keys 2 Pack, it provides only one pin, but the cap and stated lifetime replacement warranty give it a distinct durability focus. It does not add a coupler lock or a second receiver lock, so it is less complete than the Master Lock 2848DAT for trailer-wide coverage. Fit is also restricted to 2-inch hitches, and the supplied details list no extra security features beyond the locking mechanism.
Pros:- Solid carbon-steel construction.
- Weatherproof slide cap helps block dirt and debris.
- Includes two keys.
- Lifetime replacement warranty is specified.
Cons:- Only one hitch pin is included.
- Fit is limited to 2-inch Class III/IV hitches.
- No coupler lock or additional security feature is specified.
Best for: Owners of a 2-inch Class III/IV hitch who need a single receiver pin with a protective cap and stated replacement warranty.
Not ideal for: Buyers who need two receiver locks, a coupler lock, or compatibility with receiver sizes other than 2 inches.
- Material:Carbon steel
- Hitch size:2 inches
- Compatible hitch class:Class III/IV
- Weight:1.17 pounds
- Dimensions:9.06 x 4.06 x 1.77 inches
- Finish:Powder coated
- Components:1 hitch pin and 2 keys
- Warranty:Lifetime replacement warranty
Our verdict“Pick the Rhino USA for a single 2-inch receiver connection with a protective cap; choose the Master Lock set for both receiver and coupler coverage.”
CZC AUTO Hitch Locking Pin with 5/8″ Pin for 2″ and 2.5″ Receiver, Keyed Alike
This CZC AUTO is the clearest fit for buyers who need several receiver locks sharing one key: the package includes four locks with keyed-alike operation. Its 5/8-inch carbon-steel pin and 3-1/2-inch effective length suit 2-inch and 2.5-inch receivers, while the weather-resistant coating supports outdoor trailer and accessory use. Compared with the TowWorks 79634 four-pack, it offers a longer stated effective length, but the TowWorks set specifies extras such as rubber O-rings and spring clips. This CZC AUTO listing is less explicit about those anti-rattle and retention details, so I would check the included hardware and fit before buying. Its main tradeoff is that the package is specialized for two receiver sizes, and managing keys across multiple locks still takes care.
Pros:- Four locks use a keyed-alike system, reducing the need to carry separate keys.
- Carbon-steel construction pairs with an electrophoretic paint finish for outdoor use.
- 3-1/2-inch effective length is specified for compatible receiver setups.
- Suitable for trailers, bike racks, and other towing accessories.
Cons:- Compatibility is limited to 2-inch and 2.5-inch receiver tubes.
- The product data does not specify anti-rattle O-rings or spring clips.
- Keeping track of keys for several locks remains the buyer’s responsibility.
Best for: Owners securing several trailers or towing accessories with 2-inch or 2.5-inch receivers who want four locks operated by a shared key system.
Not ideal for: Buyers with 1/2-inch pin holes, nonstandard receiver setups, or a need for clearly specified anti-rattle hardware and spring clips.
- Pin diameter:5/8 inch
- Effective length:3-1/2 inches
- Compatible receiver sizes:2 inches and 2.5 inches
- Material:Carbon steel
- Finish:Electrophoretic paint
- Locks included:4
- Keys:2 per lock; 8 total
- Weather resistance:Yes
Our verdict“Choose this CZC AUTO set if you need four keyed-alike locks for standard 2-inch or 2.5-inch receivers and value shared-key convenience over detailed anti-rattle features.”
TowWorks 79632 Keyed Alike 5/8″ Trailer Hitch Lock Set with Extra Long 3-1/4″ Span, Double Safety Tow Hitch Receiver Locking Pin for Class III/IV Hitches, 2-Pack
For buyers who need two locks rather than a larger multi-lock bundle, the TowWorks 79632 balances keyed-alike convenience with a useful anti-rattle setup. Its 3-1/4-inch span is intended for Class III and IV hitches with 2-inch or 2.5-inch receivers, and rubber O-rings help limit movement and noise once installed. The push-lock design keeps routine locking straightforward, while a dust cap helps protect the mechanism. Compared with the four-lock TowWorks 79634, this pack makes more sense for a pair of trailers or towing accessories, but supplies fewer pins. Its alloy-steel construction and coated finish are practical for regular outdoor use; the tradeoff is fit sensitivity, since some adjustable and channel-style hitches are excluded and the O-rings may need positioning to suit a particular setup.
Pros:- Two locks share a keyed-alike system.
- 3-1/4-inch span is designed for compatible 2-inch and 2.5-inch receivers.
- Rubber O-rings help reduce rattling around the installed pin.
- Push-lock operation and a dust cap support convenient everyday use.
Cons:- Does not fit some adjustable or channel-style hitches.
- The O-rings may require adjustment for a secure, quiet fit.
- The two-lock package offers less coverage than the TowWorks 79633 or 79634 sets.
Best for: Owners of two Class III or IV towing setups who want keyed-alike locks, a longer span, and hardware intended to reduce pin rattle.
Not ideal for: Buyers with adjustable channel-style mounts or anyone who needs three or four locks in one package.
- Pin diameter:5/8 inch
- Span:3-1/4 inches
- Receiver compatibility:Class III/IV; 2-inch and 2.5-inch receivers
- Material:Alloy steel
- Finish:Black e-coated on zinc plated
- Locks included:2
- Keying:Keyed alike
- Weight:2.3 pounds
Our verdict“Pick the TowWorks 79632 when two compatible hitches need keyed-alike locks and anti-rattle details matter more than maximizing the number of pins.”
TowWorks 79634 Keyed Alike 5/8″ Trailer Hitch Lock Set with Extra Long 3-1/4″ Span (4-Pack)
The TowWorks 79634 is the strongest choice here for buyers outfitting several compatible hitches with the same style of lock. It supplies four keyed-alike pins, plus spring clips, rubber caps, and a large O-ring supply to help manage fit and rattling across multiple setups. Like the TowWorks 79632 two-pack, it uses a 5/8-inch pin with a 3-1/4-inch span for Class III/IV hitches and 2-inch or 2.5-inch receivers; the difference is broader coverage and more included fitting hardware. Compared with the CZC AUTO four-lock set, TowWorks gives clearer detail about its O-rings and spring clips, though its listed compatibility exclusions matter: certain adjustable mounts, threaded bike racks, and 1/2-inch pin holes are not suitable. Buyers needing just one or two locks may find this package more than their setup requires.
Pros:- Four locks share the same keying system.
- Includes spring clips, rubber caps, and 24 O-rings for multiple installations.
- 3-1/4-inch span supports compatible 2-inch and 2.5-inch receiver setups.
- Warranty covers the finish for one year and lock function for life.
Cons:- Not compatible with several adjustable mounts and threaded bike-rack connections.
- Does not fit 1/2-inch pin holes.
- Four locks may be unnecessary for buyers with a single towing setup.
Best for: Owners managing several Class III/IV trailers or accessories who want four locks on one key system and included anti-rattle and weather-protection parts.
Not ideal for: Users of adjustable ball mounts, rapid-hitch systems, threaded bike-rack connections, or 1/2-inch pin holes, and buyers who need only one lock.
- Pin diameter:5/8 inch
- Span:3-1/4 inches
- Receiver compatibility:Class III/IV; 2-inch and 2.5-inch receivers
- Main materials:Steel, zinc alloy, and rubber
- Locks included:4
- Keys:8, keyed alike
- Included accessories:4 spring clips, 4 rubber caps, 24 rubber O-rings
- Warranty:One year on finish; lifetime on function
Our verdict“Choose the TowWorks 79634 if you need four compatible receiver locks and value its included fit and anti-rattle accessories over a smaller, simpler set.”
TowWorks 79633 Keyed Alike 5/8″ Trailer Hitch Lock Set with Extra Long 3-1/4″ Span, Double Safety Tow Hitch Receiver Locking Pin for Class III/IV Hitches, 2″ and 2.5″ Receivers, 3-Pack
The TowWorks 79633 fills the gap between a two-lock starter set and the four-lock TowWorks 79634: it provides three keyed-alike pins for buyers with a few towing setups, without committing to the larger pack. Its 3-1/4-inch active span and 5/8-inch diameter are intended for compatible Class III/IV hitches with 2-inch or 2.5-inch receivers. Each lock includes a spring clip, rubber cap, and O-rings, giving it more explicitly listed installation and rattle-control accessories than the CZC AUTO four-pack. That extra fit hardware is useful, but it does not broaden compatibility to every mount: specified exclusions include channel-style adjustable mounts, certain rapid-hitch systems, threaded bike racks, and 1/2-inch pin holes. Compared with the 79634, the main compromise is simply one fewer lock; check your hitch dimensions before choosing either set.
Pros:- Three locks use keyed-alike tubular keys.
- Each pin includes a spring clip and rubber cap.
- Rubber O-rings are included to help reduce rattling and adjust fit.
- Warranty covers finish for one year and lock function for life.
Cons:- Compatibility excludes several adjustable mounts and rapid-hitch systems.
- Does not fit hitches with 1/2-inch pin holes.
- Provides one fewer lock than the TowWorks 79634 four-pack.
Best for: Owners with three compatible trailers or receiver accessories who want shared-key operation and included anti-rattle hardware without a four-lock package.
Not ideal for: Buyers using excluded adjustable or channel-style mounts, threaded bike racks, or hitches with 1/2-inch pin holes.
- Pin diameter:5/8 inch
- Active span:3-1/4 inches
- Receiver compatibility:Class III/IV; 2-inch and 2.5-inch receivers
- Main materials:Steel, zinc alloy, and rubber
- Locks included:3
- Keys:6 tubular keys, keyed alike
- Included accessories:3 spring clips, 3 rubber caps, 18 rubber O-rings
- Warranty:One year on finish; lifetime on function
Our verdict“The TowWorks 79633 suits buyers with three compatible setups who want the 79634-style accessories but do not need a fourth lock.”
METOWARE Keyed Alike Trailer Lock Set, 5/8″ Hitch Lock & 1/4″ Coupler Lock
Unlike the TowWorks sets, which focus on multiple receiver pins, this METOWARE package covers two different points in a trailer setup: a 5/8-inch hitch lock and a 1/4-inch coupler lock operated by the same key. That makes it the most relevant pick here for someone who wants to secure both the receiver connection and a latch-type coupler without carrying separate keys. Its 3-1/2-inch span and stated fit for many Class III, IV, and V systems offer broad intended use, while the coated-steel construction is suited to outdoor equipment. The tradeoff is that this is not a multi-pin bundle like the TowWorks 79634, and the larger hitch lock may not suit smaller receivers. Buyers should also confirm their coupler is latch-type and that the hitch dimensions match before relying on the fit.
Pros:- Combines a receiver hitch lock and a coupler lock in one set.
- Keyed-alike operation lets one key work with both lock types.
- Electrophoretic-coated steel and a zinc-alloy core are specified.
- Push-to-lock design supports tool-free securing.
Cons:- The 3-1/2-inch hitch-lock span may be too large for some smaller receivers.
- The set does not provide multiple receiver pins like the TowWorks multi-packs.
- Fit depends on compatibility with both the receiver and a latch-type coupler.
Best for: Trailer owners who want one keyed-alike set for both a compatible receiver hitch and a latch-type coupler, including RV, boat, or utility-trailer setups.
Not ideal for: Buyers who need several receiver pins, have a smaller receiver that cannot accommodate the span, or use a coupler that is not latch-type.
- Lock types:Hitch lock and coupler lock
- Keying:Keyed alike
- Hitch pin diameter:5/8 inch
- Coupler lock diameter:1/4 inch
- Hitch-lock span:3-1/2 inches
- Material:Electrophoretic-coated steel with zinc-alloy core
- Weight:1.72 pounds
- Model number:40894
Our verdict“Choose this METOWARE set when securing both a compatible receiver hitch and latch-type coupler with one key matters more than having multiple hitch pins.”
How We Picked
I ranked these options around the main job implied by the search: securing a trailer connection with a locking receiver pin and, where included, a coupler lock. I weighed stated fit information, pin dimensions, the number and type of locks in each package, keyed-alike convenience, and how clearly a product suits a distinct setup. A set that covers both the receiver and coupler earns an advantage for buyers seeking a coordinated kit, while multi-packs and extended-span pins rank higher for specific fleet or fit needs rather than as universal picks.
The order also reflects how much uncertainty a buyer has to resolve before choosing. Products with clearer receiver and lock-role descriptions rise above options whose listing emphasizes only a pin or pack count. I treat similar and duplicate listings cautiously: a four-pack of receiver locks is not automatically more useful than a two-piece kit that secures separate connection points. Product names and listed specifications guide this comparison; buyers should confirm exact dimensions and lock fit with their hitch and coupler before ordering.
Factors to Consider When Choosing Locking Hitch Pin And Trailer Lock Set
Choosing a set is less about counting locks than matching each lock to a point you actually need to secure. I’d work through fit, coverage, keying, and use frequency before deciding whether a compact kit or a larger pack makes sense.
Match the Pin to the Receiver and Hardware
Start with the receiver’s pin-hole diameter, then check the pin’s usable span and the space around the receiver. A 5/8-inch pin is common among the Class III/IV products here, but that does not prove every pin will fit every hitch accessory. Measure across the outside faces the pin must pass, including any spacer, adapter, or adjustable channel hardware. A pin that is too short may not accept its lock head properly; one with excessive play can be awkward to secure. Check the hitch or accessory maker’s specifications when dimensions are unclear. This small measurement step matters more than choosing a pack with the largest number of pins.
Decide Which Connection Points Need a Lock
A receiver pin and a coupler lock protect different parts of a towing setup. The receiver lock helps keep a ball mount or accessory attached to the vehicle, while a coupler lock helps prevent an unattended trailer from being hitched to another vehicle. If you leave a trailer parked, a combined set may cover more of your routine than several receiver pins. If your main concern is keeping a removable ball mount on the vehicle, a single pin may be enough. Neither type replaces secure parking practices or makes equipment theft-proof. Choose by identifying the likely theft opportunity, not by assuming one lock secures the entire trailer.
Treat Extended Span as a Fit Feature, Not a Strength Rating
An extended-span pin can solve a clearance problem on a thick mount or adjustable channel, but extra reach alone does not indicate greater security. Measure the distance the pin must cross and compare it with the manufacturer’s stated span, leaving room for the locking head to engage. Buyers sometimes focus on the 3-1/4-inch figure in the TowWorks listings without checking the actual thickness of their hardware. A standard-length pin may be less cumbersome when it fits, while a longer pin is useful when a normal pin cannot pass through the full assembly. Also check whether the lock head and pin can rotate or sit comfortably around nearby parts. Buy length for your hardware geometry, not as a substitute for a security comparison.
Compare Keyed-Alike Sets by What Shares a Key
“Keyed alike” can reduce key juggling, but confirm which locks in the package use the same key and whether the description covers every item. A receiver-and-coupler kit is convenient when both locks can share a key; a multi-pack is useful when you need several receiver locks operated together. If you already own locks, do not assume a new set will match their keys. Keep a spare key separately from the towing vehicle, since storing every key in one place can leave you without access when it matters. For occasional use, a simple two-lock arrangement may be easier to manage than a larger collection. Key convenience should support the way you secure equipment, not decide the fit for you.
Choose Pack Size Around the Number of Setups
A two-, three-, or four-pack makes sense when you secure multiple trailers, vehicles, or removable accessories, but extra receiver pins do not replace a coupler lock. List each setup you need to protect and mark whether it needs a receiver pin, coupler lock, or both. That prevents a common mismatch: buying several similar receiver locks when the unattended trailer is the more exposed asset. Multi-packs can also help keep a spare available, though unused locks add little value if you have one towing setup. For a single trailer, a coordinated receiver-and-coupler kit may provide more practical coverage than a larger pin-only pack. Let the number and type of connection points set the pack size.
Balance Routine Convenience With Exposure
How often you remove the ball mount affects which lock arrangement feels manageable. Frequent changes make easy key access and a straightforward locking routine more useful; a rarely disturbed setup can support a more involved combination of locks. For trailers left outside or away from home, think about both the coupler and the receiver rather than relying on a single locking point. Check lock placement for access in tight spaces, especially if the hitch sits near a bumper or other hardware. A lock that is difficult to reach may be left unused, which undermines its purpose. Prioritize a setup you can consistently apply, while remembering that no hitch lock guarantees protection against determined theft.
Frequently Asked Questions
Should I buy a receiver pin lock alone or a hitch-and-coupler set?
Choose a receiver pin alone if your main aim is to keep a ball mount or accessory attached to the vehicle and you do not need a separate coupler lock. Choose a two-piece set when you also park a trailer uncoupled and want to secure its coupler. These locks cover different connection points, so one is not a substitute for the other. The RETRUE, Master Lock, METOWARE, and CZC AUTO sets in this roundup combine lock types, while several other options focus on receiver pins. Map your regular parking routine before deciding.
Will any 5/8-inch locking pin fit my Class III or Class IV receiver?
No; pin diameter is only one part of fit. The pin must also pass through the hitch and accessory holes, and its usable span must reach across the assembled hardware so the lock can engage. Listings here name 2-inch and 2.5-inch receivers in several cases, but a receiver’s nominal size does not confirm every accessory’s hole alignment or outside width. Measure the pin path and check the hitch accessory maker’s requirements. If an adjustable channel or thick mount is involved, compare its dimensions with the stated pin span before ordering.
When does an extra-long 3-1/4-inch span make sense?
An extended-span pin makes sense when a standard pin is too short to pass through the full thickness of your hitch and attached hardware. TowWorks 79632, 79633, and 79634 list a 3-1/4-inch span, making them candidates for setups that need additional reach. That figure is not a universal fit guarantee, so measure your assembly first. If a standard pin already fits cleanly, an extended model may add length you do not need. Focus on secure lock engagement and clearance around the pin head.
Is a multi-pack better value than a two-lock set?
It depends on whether you need multiple receiver pins or two different kinds of protection. A multi-pack such as the METOWARE four-pack or the TowWorks extended-span packs can suit buyers with several vehicles, trailers, or accessories. A receiver-and-coupler kit may be more useful for one trailer because it addresses separate connection points. Count the locks you will actually use, and label the role each one fills before comparing pack sizes. More pins do not provide coupler protection unless a coupler lock is included.
Can keyed-alike locks match the keys I already have?
Do not assume a new keyed-alike set will match an existing lock; the phrase generally describes the locks supplied together, not compatibility with locks from another set. Check the product listing or ask the manufacturer whether a specific keying match is available. If you buy several sets, confirm that their locks share a key across packages rather than only within each package. Keep a spare key somewhere separate from your towing vehicle. If matching existing keys is a requirement, verify it before purchase rather than relying on the set name.
Conclusion
For the best overall choice, I’d begin with RETRUE because its keyed-alike kit speaks directly to buyers seeking a coordinated hitch-and-trailer lock setup. For a familiar two-piece receiver-and-coupler arrangement, Master Lock 2848DAT is a clear alternative; for a specific fit challenge, the TowWorks 79632 is the better match when its extended span suits the hardware. Buyers seeking multiple receiver pins can compare the METOWARE four-pack and TowWorks multi-packs, while the single Rhino USA pin suits someone who only needs receiver-pin coverage. For beginners, I’d favor a clearly described two-piece set after confirming receiver and coupler fit; for value-focused buyers, match pack contents to actual connection points instead of choosing by count alone. Measure first, then pick the set that covers the parts you need to secure.
Halloween Picks
halloween
As an affiliate, we earn on qualifying purchases.
