Best Tow Hitch Lock for Different Receiver Sizes

#1 · Best Overall

1. Master Lock Dual-Pin Receiver Lock

• Weight: 14.4 oz
• Material: metal, rubber
• Material Type: metal, rubber

Best for: Class I through IV versatility.

Why it ranks #1: Includes 1/2-inch and 5/8-inch pins for Class I-IV receivers, with stated ratings up to 3,500 and 10,000 pounds respectively.

Two interchangeable pin sizes give the Master Lock 2866DAT coverage across Class I through IV receiver applications. The 1/2-inch pin is rated up to 3,500 pounds for Class I and II, while the 5/8-inch pin is rated up to 10,000 pounds for Class III and IV.

This kit includes 1/2-inch and 5/8-inch pins, allowing one lock head to serve the stated Class I/II and Class III/IV applications. Their respective listed ratings are up to 3,500 and 10,000 pounds, helping buyers match the pin to the receiver class and rating. The head rotates 360 degrees so the keyway can face forward, and the push-to-lock mechanism secures the head by pressing it firmly onto the pin. A weather-resistant seal and cap protect the keyway.

Skip it if you need a stainless-steel pin for 2-inch and 2.5-inch hitches; the Master Lock 1469DAT lists stainless construction and both sizes.

This Master Lock suits buyers moving among Class I through IV receivers who value two pin sizes and a weather-sealed, rotating head. Match the pin and its stated rating to the receiver class.

Listed on Amazon as: Master Lock Receiver Lock, Weather Resistant Trailer Coupler, Keyed 2866DAT

#2 · Broad Receiver Fit

2. CZC AUTO Receiver Pin Lock

• Weight: 0.32 kg
• Material: Carbon Steel
• Material Type: Carbon Steel

Best for: Easy-access receiver locking.

Why it ranks #2: Its 5/8-inch pin has a 3-1/2-inch effective length and is listed for Class III/IV 2-inch and 2.5-inch receivers.

A 360-degree rotating lock head makes the CZC AUTO pin easier to handle when receiver access is awkward. Its 5/8-inch pin has a 3-1/2-inch effective length and is listed for Class III and IV 2-inch and 2.5-inch receivers, while a rubber cap covers the key slot.

The listed 3-1/2-inch effective length and 5/8-inch pin diameter cover the stated 2-inch and 2.5-inch Class III/IV receiver range. A rotating head can improve hand access around the receiver, and the rubber key-slot cap helps keep moisture, dust, and rust away from the opening. The operating sequence is straightforward: turn the key to release the pin, then push the head onto the pin to lock and check that it has clicked into place.

Skip it if you want anti-rattle O-rings included; the JUSTTOP DTPG lists four rubber rings for its pin.

This CZC AUTO pin fits buyers seeking a rotating head and covered key slot across listed 2-inch and 2.5-inch receivers. Be prepared to verify the lock clicks into place during installation.

Listed on Amazon as: CZC AUTO Trailer Hitch Pin Lock 5/8" for Class III IV 2" 2-1/2" Receiver

#3 · O-Ring Kit

3. JUSTTOP Receiver Pin Lock

• Weight: 14.1 oz

Best for: Rattle-conscious mixed-size users.

Why it ranks #3: A 5/8-inch pin with 3-1/2-inch effective length fits most listed 2-inch and 2.5-inch Class III/IV receivers and includes four anti-rattle O-rings.

Four anti-rattle rubber O-rings are the JUSTTOP pin’s practical distinction, helping reduce movement around a locked hitch connection. Its 5/8-inch pin and 3-1/2-inch effective length are listed for many Class III and IV 2-inch and 2.5-inch receivers, covering two common receiver sizes.

The 3-1/2-inch effective pin length and 5/8-inch diameter make this a candidate for the listed Class III and IV 2-inch and 2.5-inch receivers. Four rubber O-rings address rattling and help keep the pin steady, which can make a towing setup less noisy in use. Black electrophoretic-painted carbon steel supplies a rigid pin body, and the tubular key system is described as tamper-resistant. The product listing does not specify an included key count.

Skip it if you want a listed key count and a dust cover; the Rhino USA HITCHPIN-P lists two keys and a dust cover.

This JUSTTOP lock suits buyers who use a listed 2-inch or 2.5-inch Class III or IV receiver and want O-rings to limit rattle. Its listing does not provide an included key count, so factor that into your choice.

Listed on Amazon as: JUSTTOP Trailer Hitch Receiver Pin Lock,5/8" Dia 3-1/2" Long Pin Trailer Lock for Class III IV 2" and 2-1/2" Receiver,Tow Hitch Pin Lock with 4 Anti-Rattle Rubber O-Rings,for Trailer Truck Car Boat

#4 · Stainless Construction

4. Master Lock Stainless Receiver Lock

• Weight: 14.4 oz
• Material: Stainless Steel
• Material Type: Stainless Steel

Best for: Corrosion-conscious heavy-duty trucks.

Why it ranks #4: The 5/8-inch stainless-steel pin has a 3-1/2-inch shaft for 2-inch and 2.5-inch hitches, with a swivel head for access.

Stainless-steel construction gives the Master Lock 1469DAT a corrosion-resistant advantage for buyers outfitting a heavy-duty tow package. Its 5/8-inch pin has an extended 3-1/2-inch shaft for listed 2-inch and 2.5-inch hitches, and a swiveling head helps provide access around the receiver.

The 5/8-inch locking pin and 3-1/2-inch shaft are specified to fit 2-inch and 2.5-inch hitches, making this a flexible option across those receiver sizes. Stainless steel resists corrosion, a practical material choice for a lock exposed to outdoor towing conditions. The swivel head allows easier access when positioning the lock, while the push-to-lock mechanism simplifies securing it. The product is also identified for late-model trucks equipped with heavy-duty tow packages.

Skip it if you need a lock for a 2.5-inch Class V receiver; the Rhino USA HITCHPIN-P is specified for that size.

This Master Lock suits owners of listed 2-inch or 2.5-inch receivers who value stainless steel and easier head access. Its stated size range does not cover the Rhino USA Class V 2.5-inch-specific fit distinction.

Listed on Amazon as: Master Lock Silver and Red Receiver Lock, Stainless Steel BarbellTM Hitch Pin Lock, Fits 5/8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT

#5 · Anti-Rattle Kit

5. TowWorks 79631 Hitch Lock

• Material: Steel
• Material Type: Steel

Best for: Extra-span adjustable setups.

Why it ranks #5: Its 5/8-inch pin offers a 3-1/4-inch active length for 2-inch and 2.5-inch receivers and includes six O-rings plus a spring clip.

A 3-1/4-inch active span lets the TowWorks 79631 reach listed 2-inch and 2.5-inch Class III and IV receivers. Its separate spring clip adds a second retention step, while six rubber O-rings help reduce pin rattle and keep the pin steady during towing.

The 5/8-inch pin’s 3-1/4-inch maximum active length is intended to cover the listed 2-inch and 2.5-inch Class III/IV receivers. TowWorks pairs the keyed lock with a separate spring clip for additional safety, and specifically cautions that the clip must be used. Six included O-rings can hold the pin still and reduce rattling. The zinc-plated internal finish and black electrophoretic exterior treatment are described as rust-resistant surface protection for ongoing use.

Skip it if you need a 4-1/2-inch span for an adjustable channel mount; the TowWorks 79831 offers that longer span.

This TowWorks lock fits buyers who need the listed 2-inch or 2.5-inch receiver range plus O-rings for a quieter, steadier pin. Its safety setup requires using the separate spring clip.

Listed on Amazon as: 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

#6

6. Rhino USA 2.5-Inch Hitch Pin

• Weight: 15.8 oz
• Material: Carbon Steel

Best for: Class V receiver owners.

Why it ranks #6: This carbon-steel locking pin is specifically sized for 2.5-inch Class V hitches and includes a dust cover and two keys.

A 2.5-inch receiver fit sets this Rhino USA locking pin apart for Class V setups, where a standard 2-inch pin is not the stated match. The solid-steel, tamper-resistant design adds a keyed theft deterrent, and its dust cover helps keep debris away from the lock opening.

This pin is specifically listed for 2.5-by-2.5-inch Class V receivers, giving owners of that larger receiver a size-matched option. Its carbon-steel construction provides the solid pin body, while the tamper-resistant locking design helps secure the trailer or hitch connection against theft. A dust cover protects the key opening from debris, and two keys are included. The fit is focused on 2.5-inch Class V receivers rather than the 2-inch receiver size used by many Class III and IV hitches.

Skip it if you have a standard 2-inch receiver; the Rhino USA HITCHPIN-P is listed for Class III and IV 2-inch hitches.

Pick this Rhino USA pin when your towing setup uses a 2.5-inch Class V receiver and you want a covered, keyed lock. Its size-specific fit makes receiver dimensions the key boundary to check.

Listed on Amazon as: Rhino USA 2.5” Trailer Hitch Pin – Patented 5/8" Locking Receiver Pin for Class V Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK

#7

7. Rhino USA 2-Inch Hitch Pin

• Weight: 1.17 lb
• Material: Carbon Steel

Best for: Class III and IV owners.

Why it ranks #7: A carbon-steel receiver pin for Class III and IV 2-inch hitches, supplied with two keys and a dust cover.

The solid-steel locking pin targets standard 2-inch receivers, giving Class III and IV owners a keyed way to secure a trailer or hitch connection. Its tamper-resistant construction puts theft deterrence at the center, while the dust cover helps shield the lock opening when the pin is installed.

This Rhino USA model is sized for 2-by-2-inch Class III and IV receivers, so it suits common standard receiver setups without spanning multiple receiver sizes. Carbon steel provides the pin’s solid construction, and the locking design adds a barrier against hitch or trailer theft. A dust cover helps protect the key opening from debris, while two included keys give you a spare for access. Its stated fit is specifically 2-inch receivers, not larger 2.5-inch setups.

Skip it if you need a lock spanning 2-inch and 2.5-inch receivers; the Master Lock 1469DAT lists both sizes.

Choose this Rhino USA pin for a standard 2-inch Class III or IV receiver when steel construction and a covered keyway matter. Its stated receiver fit is limited to 2 inches, so check that boundary before choosing it.

Listed on Amazon as: Rhino USA 2in Trailer Hitch Pin – Patented Locking Receiver Pin

#8

8. METOWARE 2-Inch Hitch Lock

• Weight: 10.5 oz

Best for: Single-wall 2-inch receivers.

Why it ranks #8: Its 5/8-inch pin has a 2-3/4-inch effective length for 2-inch receivers; the listing warns it is not compatible with double-walled tubes.

A 2-3/4-inch effective pin length gives the METOWARE lock a defined fit for 2-inch-by-2-inch receiver tubes. Its high-strength steel construction serves buyers seeking a keyed theft deterrent for a hitch and ball mount, but the listing expressly excludes double-walled receiver tubes.

The 5/8-inch pin and 2-3/4-inch effective length are specified for virtually any 2-inch-by-2-inch receiver, helping narrow the fit to standard receiver dimensions. High-strength steel forms the lock body and pin, supporting the stated goal of protecting the trailer and ball mount from theft. Unlike products listing multiple receiver sizes, this one is presented as a 2-inch receiver lock. The double-wall exclusion is important: receiver-tube construction, not just the nominal size, determines whether it is suitable.

Skip it if you have a double-walled tube; the CZC AUTO 13 lists 2-inch and 2.5-inch receivers without that stated exclusion.

Choose this METOWARE lock for a 2-inch receiver when its 2-3/4-inch effective length matches your setup. It is not suitable for double-walled receiver tubes, so that construction detail is decisive.

Listed on Amazon as: METOWARE Trailer Hitch Lock, 5/8" Dia Hitch Pin, Fit 2" Receiver, Black

#9

9. TowWorks 79831 Extended Hitch Lock

• Weight: 0.58 kg
• Material: Steel & Zinc Alloy
• Material Type: Steel & Zinc Alloy

Best for: Long-span channel mounts.

Why it ranks #9: The 5/8-inch pin has a 4-1/2-inch span for many adjustable hitches and channel mounts, but does not fit Fastway adjustable hitches.

The 4-1/2-inch active span is the defining feature of the TowWorks 79831, extending its reach for most adjustable hitches and channel-style mounts. Its 5/8-inch hardened-steel pin is CNC-machined from one piece, and a separate spring clip provides an additional retention step.

TowWorks lists this extra-long lock for most adjustable hitches, including specified CURT channel-style models and adjustable pintle hooks. The 4-1/2-inch active span gives it reach for those wider mounting arrangements, while the 5/8-inch one-piece hardened-steel pin supplies the locking bar. A spring clip adds another safety measure and can make quick hitch changes convenient without using the lock. The listing expressly excludes FASTWAY adjustable hitches, so that compatibility boundary matters.

Skip it if you use a FASTWAY adjustable hitch; the TowWorks 79631 is listed for Class III and IV 2-inch and 2.5-inch receivers.

Select this TowWorks model for an adjustable channel mount that needs its 4-1/2-inch span, including listed CURT setups. It is not compatible with FASTWAY adjustable hitches, so check that fit boundary.

Listed on Amazon as: 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

#10

10. RETRUE Coupler Lock

• Material: Alloy Steel, Aluminum
• Material Type: Alloy Steel, Aluminum

Best for: Multiple coupler-size owners.

Why it ranks #10: This adjustable lock fits 1-7/8-inch, 2-inch, and 2-5/16-inch couplers, but it is a coupler lock rather than a receiver pin lock.

Eleven locking positions let the RETRUE lock adjust across 1-7/8-inch, 2-inch, and 2-5/16-inch trailer couplers. Unlike a receiver pin, this model secures the coupler itself, making it relevant to owners who want one adjustable lock for different ball-coupler sizes rather than a hitch receiver pin.

The adjustable 11-position design covers three listed coupler sizes, so one lock can serve different trailers in a mixed-size fleet. Its heavy-duty version combines a wider, thicker steel U-shaped pipe with a solid body, addressing resistance to external force as well as fit. The body is aluminum and the U-shaped component is high-strength A36 steel. This is a coupler ball lock, not a receiver pin, so it protects the trailer coupler rather than the receiver connection.

Skip it if you need a pin through a receiver; the Master Lock 1469DAT is a receiver lock for listed 2-inch and 2.5-inch hitches.

Choose the RETRUE if you need adjustable security at the trailer coupler across three listed sizes. It does not replace a receiver pin lock, so choose based on which connection point you need to secure.

Listed on Amazon as: RETRUE Universal Trailer Hitch Coupler Lock, Heavy-Duty Steel,Grey & Silver