A strong locking trailer hitch pin keeps a ball mount or hitch accessory secured while matching your receiver’s diameter, width, and wall design. This roundup suits drivers who want theft deterrence without giving up practical installation and removal. The 10 options cover common Class III and IV 2-inch receivers, 2.5-inch receivers, adjustable channel mounts, and one dual-pin design for both smaller and larger receiver classes.
Useful differences include effective pin span, hardened or carbon-steel construction, protective key-slot caps, rubber O-rings for reducing movement, and push-to-lock or quarter-turn operation. Before choosing, measure the receiver and the space between its pin holes, then check whether the product requires a spring clip, uses a keyed lock, or excludes specific adjustable-hitch designs.
For a standard 2-inch receiver, Rhino USA, CURT, METOWARE, and similar 5/8-inch locks offer practical coverage, while TowWorks 79631, Vehiclex, and OMT address 2-inch and 2.5-inch receivers with longer spans. TowWorks 79831 is the specialized choice for adjustable hitches and 3-inch receivers. CZC AUTO’s dual-pin model covers both 1/2-inch and 5/8-inch receiver sizes.
Prioritize verified fit first, then choose steel construction, a dust or weather cap, O-rings, or push-to-lock operation based on how you use the hitch.
Locking Trailer Hitch Pins Compared
How We Compared These Products
We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from Rhino USA, TowWorks, CZC AUTO, METOWARE, CURT, Orion Motor Tech, Vehiclex, and Kohree.
The shortlist includes products such as Rhino USA 2in Trailer Hitch Pin, TowWorks 79831 Keyed Unique 5/8 Trailer Hitch Lock with Extra Long 4-1/2 Span, and CZC AUTO Trailer Hitch Pin Lock 5/8 for Class III IV 2 2-1/2 Receiver. Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.
Detailed Reviews: Best Locking Trailer Hitch Pin
1. Rhino USA 2in Trailer Hitch Pin – Patented Locking Receiver Pin
Best for: Secure towing for Class III/IV hitches.
Experience ultimate hitch security with this patented locking receiver pin, crafted from solid steel for maximum anti-theft protection. This durable, tamper-resistant design ensures peace of mind by safeguarding your trailer and hitch from unauthorized removal.
Designed for Class III & IV hitches (2" x 2"), this towing hitch lock provides a secure and reliable connection. Made from carbon steel, it measures 9.06 x 4.06 x 1.77 inches and weighs 14.9 ounces, including two keys and a dust cover for added protection. Its robust construction is built for ultimate peace of mind during transport.
Product Details
| Brand | Rhino USA |
|---|---|
| Color | Black |
| Included Components | 2 keys, 1 Hitch Pin |
| Item Weight | 14.9 ounces |
| Item model number | HITCHPIN-P |
| Manufacturer | Rhino USA |
| Material | Carbon Steel |
Additional Product Information
| Dimensions | 9.06 x 4.06 x 1.77 inches |
|---|---|
| Size | 2 IN – 1 Pack |
| Special Features | Dust Cover |
| Style | 1 Pack |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Pros
- Solid steel construction for maximum security
- Patented locking design deters theft
- Fits all Class III & IV hitches (2" x 2")
- Includes two keys and a dust cover
Cons
- Not compatible with hitches smaller than 2 inches.
Ideal for owners of Class III/IV hitches seeking robust security. Ensure your hitch receiver is 2 inches square to guarantee a proper and secure fit for this American-owned company's product.
2. TowWorks 79831 Keyed Unique 5/8″ Trailer Hitch Lock with Extra Long 4-1/2″ Span, Double Safety Tow Hitch Locking Pin for 3″ Receivers and Adjustable Channel Mounts
Best for: Adjustable hitch lock with extended span.
This extra-long 5/8" diameter locking hitch pin offers a maximum active length of 4-1/2", designed to fit most adjustable hitches and channel mounts. Its robust steel and zinc alloy construction ensures durability for towing up to 20,000 lbs GTW.
Processed from one-piece solid hardened steel, this lock features a black e-coated on zinc plated finish for corrosion resistance. The 4-1/2" span is ideal for adjustable hitches like CURT channel style adjustable hitches and adjustable pintle hooks. A spring clip provides additional convenience for quick hitch changes, though it must not be relied upon as the sole securing mechanism.
Product Details
| Brand | TowWorks |
|---|---|
| Compatible with Vehicle Type | Trailer |
| Item Weight | 0.58 kg |
| Manufacturer | TowWorks |
| Part Number | 79831 |
| Manufacturer Warranty Description | One-Year warranty on lock finish, lifetime warranty on lock function. |
| Material | Steel & Zinc Alloy |
Additional Product Information
| Model Number | 79831 |
|---|
Pros
- Extra-long 4-1/2" active span
- Fits most adjustable hitches and channel mounts
- Solid hardened steel construction
- Black e-coated on zinc plated finish
Cons
- Does not fit FASTWAY adjustable hitches.
Best for owners of specific adjustable hitches needing an extended pin. Verify your hitch dimensions, especially if using CURT channel style adjustable hitches, to ensure compatibility.
3. TowWorks 79631 Keyed Unique 5/8″ Trailer Hitch Lock with Extra Long 3-1/4″ Span, Double Safety Tow Hitch Receiver Locking Pin for Class III IV Hitches with 2″ and 2.5″ Receivers
Best for: Versatile lock for 2" & 2.5" receivers.
Featuring an extra-long 3-1/4" span, this 5/8" diameter locking hitch pin fits Class III/IV hitches with both 2" and 2-1/2" receivers. Its solid hardened steel construction with a black electrophoretic finish provides excellent anti-rust capabilities.
This hitch lock pin offers a secure fit for 2" and 2-1/2" receivers, boasting a durable black electrophoretic on zinc plated finish for superior rust resistance. It includes rubber O-rings to minimize rattles and keep the pin stable. A separate spring clip is provided for additional safety, but must be used in conjunction with the lock.
Product Details
| Brand | TowWorks |
|---|---|
| Color | Black 1pc 5/8" |
| Compatible Groove Diameter | 2 inches |
| Item Dimensions | 7.7 x 1.2 x 1.2 inches |
| Manufacturer | TowWorks |
| Material | Steel |
| Model | 79631 |
Additional Product Information
| Screw Head Style | Push Lock |
|---|---|
| Size | 5/8" NOT Keyed Alike |
| Size Name | 5/8" NOT Keyed Alike |
| Warranty Description | One-Year warranty on lock finish, lifetime warranty on lock function. |
Pros
- Fits 2" and 2-1/2" receivers
- Extra-long 3-1/4" active span
- Solid hardened steel construction
- Includes rubber O-rings to reduce rattle
Cons
- Spring clip must be used with the lock for safety.
Suitable for Class III/IV hitches with 2" or 2-1/2" receivers seeking a secure, anti-rust lock. Ensure you utilize the provided spring clip for maximum safety during towing.
4. CZC AUTO Trailer Hitch Pin Lock 5/8″ for Class III IV 2″ 2-1/2″ Receiver
Best for: Dogbone style lock for 2" & 2.5" receivers.
This dogbone-style trailer hitch receiver lock features a 5/8" pin with a 3-1/2" effective length, perfectly suited for Class III/IV 2" and 2-1/2" hitch receiver tubes. Its black electrophoretic painted carbon steel construction ensures durability and resistance to bending.
Constructed from solid, hard-to-bend carbon steel with a black electrophoretic paint finish, this lock offers robust protection. The 360-degree rotating head provides easy handling, while the all-weather rubber key slot cap shields the keyhole from moisture and dust. The updated tubular keyhole and zinc alloy components ensure reliable operation.
Product Details
| Brand | CZC AUTO |
|---|---|
| Compatible with Vehicle Type | Car, RV, Trailer, Truck |
| Item Weight | 0.32 kg |
| Manufacturer | CZC AUTO |
| Part Number | 11208S |
| Material | Carbon Steel |
| Model Number | 13 |
Pros
- Fits 2" and 2-1/2" receivers
- 3-1/2" effective pin length
- Durable carbon steel construction
- Protective rubber key slot cap
Cons
- Requires a distinct 'click' to confirm lock engagement.
A great choice for Class III/IV hitches in the 2" or 2-1/2" size range. Ensure you hear the 'click' and pull the head to confirm it's locked for optimal security.
5. METOWARE Trailer Hitch Lock, 5/8″ Dia Hitch Pin, Fit 2″ Receiver, Black
Best for: High-security lock for 2" receivers.
This trailer receiver lock utilizes a high-strength steel 5/8" diameter hitch pin with 2-3/4 inches of effective length, providing higher security and theft deterrence for your trailer and hitch ball mount.
Made from high-strength steel, this lock ensures secure protection against theft. It fits virtually any 2" x 2" hitch receiver with its 5/8" diameter pin and 2-3/4" effective length. The durable construction is designed to safeguard your equipment during storage or transit.
Product Details
| Brand | METOWARE |
|---|---|
| Item Weight | 10.5 ounces |
| Item model number | 47288 |
| Manufacturer | METOWARE |
| Part Number | 47288 |
| Model | hitch lock |
| Dimensions | 8.87 x 1.87 x 1.25 inches |
Pros
- High-strength steel construction
- 5/8" diameter pin
- 2-3/4" effective pin length
- Provides theft deterrence
Cons
- Not compatible with double-walled receiver tubes.
Recommended for owners of standard 2" hitch receivers seeking enhanced security. Verify your receiver is not double-walled to ensure a proper and secure fit for this METOWARE lock.
6. CURT 23518 5/8″ Barbell Hitch Lock for 2″ Receivers, Black
Best for: Simple security for 2" receivers.
This CURT barbell-style hitch lock offers dependable security for your trailer and hitch ball mount, constructed from high-strength steel to deter theft. Its simple 1/4-turn lock activation makes for convenient operation.
With a 5/8" diameter pin and 2.85 inches of usable pin length, this receiver hitch lock fits virtually any 2-inch receiver. The high-strength steel construction provides an impenetrable appearance to deter thieves. Its 1/4-turn activation allows for quick and easy locking and unlocking as needed.
Product Details
| Brand | CURT |
|---|---|
| Item Weight | 10.2 ounces |
| Item model number | 23518 |
| Manufacturer | CURT |
| Part Number | 23518 |
| Model | 23518 |
| Dimensions | 8.87 x 1.87 x 1.25 inches |
Additional Product Information
| Additional Information | Important information |
|---|
Pros
- High-strength steel construction
- Simple 1/4-turn lock activation
- Fits virtually any 2" receiver
- Barbell style deters theft
Cons
- Offers a shorter usable pin length of 2.85 inches.
Ideal for users with 2" receivers needing straightforward, secure locking. Consider this if a slightly shorter pin length (2.85 inches) is suitable for your specific towing setup.
7. OMT Locking Hitch Pin Set with 5/8″ Pin for 2 & 2.5 Receiver
Best for: Robust lock for 2" & 2.5" receivers.
Orion Motor Tech's locking hitch pin features a hardened steel core and drop-proof design to prevent break-ins during storage or travel. This 5/8" pin matches all 2" and 2.5" trailer receivers perfectly.
With a 5/8" diameter and 7.7" total length, this pin provides a reliable fit for 2" and 2.5" receivers, offering an effective length of 4.3" to keep the pin secure and minimize movement. The hardened steel core and drop-proof design ensure attempts to tamper with the lock fail quickly.
Product Details
| Brand | Orion Motor Tech |
|---|---|
| Item Weight | 14.9 ounces |
| Item model number | TPA-LOC2-AB |
| Manufacturer | Orion Motor Tech |
| Part Number | MPN1TPALOC2-AB |
| Model | locking hitch pin |
| Package Dimensions | 9.53 x 2.48 x 2.44 inches |
Additional Product Information
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
|---|
Pros
- Hardened steel core for security
- Fits 2" and 2.5" receivers
- 4.3" effective pin length
- Drop-proof design resists tampering
Cons
- Total pin length is 7.7 inches, which may be excessive for some applications.
Best for owners of 2" or 2.5" receivers needing strong theft protection. Ensure the 7.7" total length is appropriate for your hitch setup to achieve a secure fit.
8. Vehiclex Trailer Hitch Pin Lock for 2″ and 2.5″ Receiver, Class III & IV
Best for: Anti-rattle lock for 2" & 2.5" receivers.
This Vehiclex trailer hitch pin lock fits 2" and 2.5" receivers and features five rubber O-rings to eliminate rattling noises. Made from tough, wear-resistant carbon steel with black electrophoretic paint, it prevents corrosion.
Designed for compatibility with 2" and 2.5" hitch receivers, this lock boasts a 3-1/8" effective span. The carbon steel construction with black electrophoretic paint ensures durability and corrosion resistance. A unique tubular key system with two keys provides security, while the protective rubber cap shields the key slot from elements.
Product Details
| Brand | Vehiclex |
|---|---|
| Item Weight | 1.25 pounds |
| Item model number | VHX-HITCH-PIN-LOCK-5/8-3-1/8-MPN |
| Manufacturer | Vehiclex |
| Part Number | VHX-HITCH-PIN-LOCK-5/8-3-1/8-MPN |
| Model | VHX-HITCH-PIN-LOCK-5/8-3-1/8-MPN |
| Package Dimensions | 7.7 x 1.65 x 1.65 inches |
Pros
- Eliminates rattling with O-rings
- Fits 2" and 2.5" receivers
- 3-1/8" effective span
- Durable carbon steel construction
Cons
- Requires careful alignment of O-rings for optimal anti-rattle performance.
Ideal for users with 2" or 2.5" receivers who prioritize a quiet, rattle-free towing experience. Ensure proper O-ring placement for the best anti-rattle results.
9. CZC AUTO Hitch Receiver Pin Lock, Right Angle 1/2″ and 5/8″ Dual Pins
Best for: Dual-size lock with push-to-lock.
This CZC AUTO hitch lock features dual pins: a 1/2" pin with 3" effective length and a 5/8" pin with 3-1/2" effective length, fitting 1-1/4" and 2"/2-1/2" receivers respectively. It utilizes a convenient push-to-lock design without needing a key to secure.
Constructed from chrome-plated carbon steel, this lock offers versatility with both 1/2" and 5/8" pin options. The push-to-lock mechanism engages with an audible 'click', and a 1/4 turn of the key unlocks it. A protective cap keeps the keyhole shielded from moisture and rust, ensuring longevity.
Product Details
| Brand | CZC AUTO |
|---|---|
| Compatible with Vehicle Type | Car, Truck |
| Item Weight | 25 pounds |
| Manufacturer | CZC AUTO |
| Part Number | 11102S |
| Material | Carbon Steel |
| Model Number | 11102S |
Pros
- Dual pin sizes (1/2" and 5/8")
- Fits 1-1/4" and 2"/2-1/2" receivers
- Push-to-lock design for ease of use
- Chrome-plated carbon steel construction
Cons
- Requires a key to unlock, unlike some push-to-lock mechanisms.
Perfect for owners with multiple trailer sizes or receiver types needing a versatile lock. Confirm your receiver size (1-1/4" or 2"/2-1/2") to select the appropriate pin.
10. Kohree Trailer Hitch Lock Set, 5/8 Inch, for Class III IV Receivers
Best for: Heavy-duty lock for Class III/IV.
The Kohree 5/8" trailer hitch lock offers ultimate security with its hardened steel construction and frameless design, resisting breakage and rust. It weighs 1.5 pounds, providing a robust solution for Class III/IV receivers.
This hitch lock features a 5/8" diameter hardened steel pin with a black finish, designed for Class III/IV receivers. The flexible rubber keycap fits snugly over the lock core, protecting the keyhole from dust and moisture to maintain its integrity. For longevity, it's recommended to remove and store indoors after use.
Product Details
| Brand | Kohree |
|---|---|
| Item Weight | 2.05 pounds |
| Item model number | HY1008 |
| Manufacturer | kohree |
| Part Number | HY1008 |
| Model | Hitch Receiver Pin Lock Set |
| Dimensions | 1.61 x 8.43 x 1.61 inches |
Pros
- Hardened steel construction
- Resists breakage and rust
- Flexible rubber keycap protects keyhole
- Suitable for Class III/IV receivers
Cons
- Requires removal and indoor storage to protect longevity.
A solid choice for Class III/IV receiver owners seeking durable, rust-resistant security. Remember to store the lock indoors after use to maximize its lifespan and effectiveness.
What Buyers Often Overlook
Receiver fit and effective span
Receiver size and effective span determine whether a locking hitch pin will pass through the hitch and secure the mounted accessory. Most products here use a 5/8-inch pin for Class III and IV receivers, but compatibility is not identical. Rhino USA is specified for standard 2-inch by 2-inch Class III and IV hitches.
TowWorks 79631, OMT, and Vehiclex list coverage for both 2-inch and 2.5-inch receivers, with effective spans of 3-1/4, 4.3, and 3-1/8 inches respectively. CZC AUTO’s standard lock lists a 3-1/2-inch effective length for those receiver sizes, while METOWARE and CURT target 2-inch receivers with 2-3/4 and 2.85 inches of usable length.
TowWorks 79831 stands apart with a 4-1/2-inch active length for many adjustable hitches and 3-inch receivers, but it does not fit Fastway adjustable hitches. Measure before ordering, especially with double-walled receivers or channel mounts.
The Key Product Trade-Off
Security materials and everyday handling
Steel construction provides the basic physical security, while the lock design affects handling and exposure to weather. Rhino USA uses carbon steel, and TowWorks 79831 uses one-piece solid hardened steel with a zinc-plated and black e-coated finish. TowWorks 79631, CZC AUTO, METOWARE, CURT, Vehiclex, and Kohree also specify steel or carbon-steel construction with protective finishes.
Key-slot caps on Rhino USA, CZC AUTO, Vehiclex, and Kohree help keep dust or moisture away from the keyhole. Vehiclex and TowWorks 79631 add rubber O-rings to limit rattling or hold the pin steady.
CURT uses quarter-turn activation, while CZC AUTO’s standard lock uses a rotating head and its dual-pin model uses push-to-lock with quarter-turn unlocking. TowWorks 79631 requires its spring clip to be used, and TowWorks 79831 includes one for convenience. Kohree advises removing and storing the lock indoors after use, making storage part of its maintenance trade-off.
Best Locking Trailer Hitch Pin: Buyer's Guide
Fit, Dimensions, and Compatibility
Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.
Capacity, Output, and Operating Format
Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.
Materials, Construction, and Care
Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.
Included Components and Setup Needs
Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.
Which Should You Choose?
Choose by receiver geometry first, then match the handling features to your routine. For a standard 2-inch receiver, CURT, METOWARE, or Rhino USA provide 5/8-inch locking-pin formats, with CURT offering quarter-turn activation and Rhino USA including a dust cover. For 2-inch and 2.5-inch receivers, compare the listed spans of TowWorks 79631, Vehiclex, OMT, or CZC AUTO.
For an adjustable channel mount or 3-inch receiver, TowWorks 79831 offers the longest stated active span, but verify the specific hitch because Fastway models are excluded. If one pin must serve both 1/2-inch and 5/8-inch receiver classes, choose the CZC AUTO dual-pin design.
For reduced rattling, consider O-rings; for dirt or moisture exposure, choose a capped key slot and follow storage guidance.
Quick Buying Checklist
- Confirm the complete dimensions against the available space.
- Verify model, accessory, connection, and appliance compatibility.
- Match capacity or output to the expected amount of use.
- Compare materials and care instructions with the maintenance routine.
- Check the included components before planning setup or first use.
- Confirm listed power, water, storage, or installation requirements where applicable.
Frequently Asked Questions
What is the primary function of a locking trailer hitch pin?
A locking trailer hitch pin secures your trailer to your vehicle’s receiver. It prevents theft by making it difficult to detach the trailer without the key, ensuring your trailer and its contents remain safe during transport and when parked.
How do I determine the correct hitch pin size?
Measure the inner width of your trailer hitch receiver. Common sizes are 1/2 inch, 5/8 inch, and 3/4 inch. Ensure the pin diameter matches your receiver’s opening for a snug and secure fit, preventing rattling and movement.
What is the difference between keyed and combination locks?
Keyed locks require a physical key to open, offering strong security. Combination locks use a sequence of numbers, eliminating the need for a key but potentially offering slightly less robust security depending on the mechanism.
Are locking hitch pins suitable for all weather conditions?
Many locking hitch pins are designed with durable materials and weather-resistant finishes to withstand outdoor elements. Look for corrosion-resistant coatings like chrome or black powder coat for longevity in rain, snow, and salt.
What does 'Class III IV' refer to for hitch pins?
Hitch classes indicate the towing capacity and receiver size. Class III and IV hitches are typically designed for heavier-duty towing and commonly use 2-inch or 2.5-inch receivers, so ensure your pin is compatible with these classes.
Final Words
Choosing the right locking trailer hitch pin depends on your receiver size and security needs. For robust protection and broad compatibility, consider models designed for common 2-inch or 2.5-inch receivers. Always verify the pin diameter matches your hitch for a secure, rattle-free connection.
