Best Trailer Hitch Receiver Lock for Common Tow Receivers

#1 · Best Overall

1. CZC AUTO Dual-Pin Hitch Lock

• Weight: 25 lb
• Material: Carbon Steel

Best for: One Lock For Two Pin Sizes.

Why it ranks #1: Two included pin sizes, 1/2 inch and 5/8 inch, cover listed Class I through IV receivers, and push-to-lock operation simplifies securing the pin.

Interchangeable 1/2-inch and 5/8-inch pins let this right-angle CZC AUTO lock cover Class I/II 1-1/4-inch and Class III/IV 2-inch or 2-1/2-inch receivers. Push-to-lock engagement makes securing it a key-free step before the key is needed to unlock.

The 1/2-inch pin has 3 inches of effective length, and the 5/8-inch pin has 3-1/2 inches, so the included sizes address distinct receiver classes. Its push-to-lock operation allows engagement without using the key; after the click, pulling the head checks that it has locked. Chrome-plated carbon steel is the listed construction, while the cap helps shield the keyhole from rain, snow, moisture, and dust. A quarter-turn unlocks it.

Skip it if you need a 3-1/2-inch receiver fit; METOWARE's 5/8-inch lock is listed for receivers up to 3-1/2 inches.

Choose this CZC AUTO for mixed Class I/II and Class III/IV towing where two pin sizes and push-to-lock operation are useful. Its largest listed receiver fit is 2-1/2 inches.

Listed on Amazon as: CZC AUTO Hitch Receiver Pin Lock, Right Angle 1/2" and 5/8" Dual Pins

#2 · Best Weather Cap

2. CZC AUTO 5/8-Inch Hitch Lock

• Weight: 0.32 kg
• Material: Carbon Steel

Best for: All-Weather Tubular-Key Fit.

Why it ranks #2: Its 5/8-inch pin has 3-1/2 inches of effective length for 2-inch and 2-1/2-inch receivers, with a rubber keyhole cap.

A rubber key-slot cap is the CZC AUTO lock’s practical differentiator, covering the keyhole from moisture, dust, and rust. Its 5/8-inch pin and 3-1/2-inch effective length also cover the listed 2-inch and 2-1/2-inch Class III/IV receivers.

The black electrophoretic-painted carbon steel construction is described as solid and hard to bend, providing a durable pin for the stated receiver classes. A 360-degree rotating head is intended to make handling easier, while the cap shields the key slot between uses. To lock it, turn the key and let the pin pop up; after hearing the click, pull the head to check engagement. That simple check adds a clear step to installation.

Skip it if you need a 1/2-inch pin for a Class I or II hitch; CZC AUTO's dual-pin lock includes a 1/2-inch pin.

Pick this CZC AUTO lock for a Class III or IV 2-inch or 2-1/2-inch setup where a capped key slot and rotating head suit regular use. It is a single 5/8-inch-pin option.

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

#3 · Dual-Pin Convenience

3. Master Lock 2866DAT

• Weight: 14.4 oz
• Material: metal, rubber

Best for: Dual-Pin Class I Through IV Coverage.

Why it ranks #3: Includes 1/2-inch and 5/8-inch pins for Class I through IV applications, plus two keys and a weather-resistant swivel-head lock.

Two included pins—1/2 inch and 5/8 inch—make this Master Lock a flexible choice across Class I through IV receiver sizes. The swivel locking head rotates 360 degrees, allowing the keyway to face forward for more convenient access during locking and unlocking.

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. That range lets one lock serve different stated receiver classes by swapping pins. Push-to-lock engagement keeps the locking step simple, and the Weather Tough seal and water-tight cap provide protection around the lock head. Two keys are included for access.

Skip it if you need a 3-1/2-inch effective pin length for a 2-1/2-inch receiver; Master Lock 1469DAT lists that extended shaft and fit.

Select this Master Lock if you want one lock with pins for Class I through IV towing and value push-to-lock operation. Keep the two separate pin ratings in view when choosing a setup.

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

#4 · Best Stainless Steel

4. InfiniteRule 2.5-Inch Lock

• Weight: 10.2 oz

Best for: Heavy-Duty 2.5-Inch Receivers.

Why it ranks #4: Purpose-built for 2.5-inch Class III, IV, and V receivers, it uses stainless steel and a threaded locking mechanism.

A machined, threaded locking mechanism sets this InfiniteRule lock apart for standard 2.5-inch receivers, adding a substantial mechanical engagement for owners of larger tow setups. Its high-grade stainless steel construction is also specified as rust resistant for weather-exposed use.

The lock is made for 2.5-inch Class III, IV, and V receiver hitches, so it targets setups beyond the common 2-inch format. A 3/8-inch threaded mechanism and thick lock cylinder overlapping the pin are described as resistance measures against damage and tampering. High-grade stainless steel brings the listed corrosion resistance, an advantage for trailers, RVs, or UTVs exposed to the elements. It is manufactured in the company’s Oxnard, California facilities.

Skip it if you have a 2-inch receiver; CURT 23518 is specified for 2-inch receivers and uses a 5/8-inch pin.

This is the right direction for a 2.5-inch Class III, IV, or V receiver on a trailer, RV, or UTV, especially where stainless construction matters. It is not the 2-inch option.

Listed on Amazon as: 2.5" Receiver Hitch Lock – Heavy-Duty Stainless Steel Anti-Theft Lock for Trailers, RVs & UTVs – Made in USA

#5 · Broadest Receiver Range

5. METOWARE 4-Inch Hitch Lock

• Weight: 1.07 lb
• Material: rubber

Best for: Long Reach Across Large Receivers.

Why it ranks #5: The 5/8-inch, 4-inch-long pin is listed for 2-inch through 3-1/2-inch Class III, IV, and V receivers.

A 4-inch pin length is this METOWARE lock’s defining advantage, with stated compatibility spanning 2-inch through 3-1/2-inch Class III, IV, and V receivers. That range gives owners of larger towing setups a single listed lock option across several receiver sizes.

The 5/8-inch diameter and 4-inch length are specified for Class III, IV, and V hitches ranging from 2 inches to 3-1/2 inches, including big towing trucks and cars. Its all-metal construction is described as an upgrade, and two tubular keys are included for locking and removal. The broader size range makes receiver dimensions the central fit check; the supplied facts do not detail a specific weather cap or locking sequence.

Skip it if you use a Class I or II receiver and need a listed fit; Master Lock 2866DAT includes a 1/2-inch pin for those classes.

This METOWARE lock suits owners of Class III, IV, or V setups whose receiver size falls between 2 and 3-1/2 inches. Its long pin and broad size range do not establish Class I/II fit.

Listed on Amazon as: METOWARE Trailer Hitch Lock, Fit 2"-3-1/2" Class III/IV/V Receiver, 1 Pack

#6

6. CURT 23518 Hitch Lock

• Weight: 10.2 oz

Best for: Straightforward 2-Inch Receiver Lock.

Why it ranks #6: Its 5/8-inch pin and 2.85 inches of usable length suit virtually any 2-inch receiver, with a quarter-turn lock activation.

A quarter-turn activation gives the CURT 23518 a simple locking and unlocking routine for 2-inch receivers. Its 5/8-inch high-strength steel pin is specified for virtually any 2-by-2-inch hitch receiver, offering a direct match for standard towing setups.

With 2.85 inches of usable pin length, this barbell-style lock is sized around the stated 2-inch receiver fit. The high-strength steel construction is intended to protect a trailer and ball mount from theft, while the quarter-turn mechanism keeps operation direct when securing or removing the pin. Its barbell shape also creates the listed impenetrable appearance as a deterrent. This is a focused 2-inch option, not a multi-size pin set.

Skip it if you need a 2-1/2-inch receiver fit; CZC AUTO's 5/8-inch lock is specified for both 2-inch and 2-1/2-inch receivers.

This CURT suits a standard 2-inch receiver owner who wants a steel pin and quarter-turn operation for a ball mount or trailer. Its listing does not extend to 2-1/2-inch receivers.

Listed on Amazon as: CURT 23518 5/8" Barbell Hitch Lock for 2" Receivers, Black

#7

7. Master Lock 1469DAT

• Weight: 14.4 oz
• Material: Stainless Steel

Best for: Extended Reach With Push-To-Lock.

Why it ranks #7: A 5/8-inch stainless steel pin with a 3-1/2-inch shaft fits listed 2-inch and 2-1/2-inch hitches and has a swivel head.

A 3-1/2-inch shaft is the defining feature of this Master Lock receiver pin, extending its stated fit to both 2-inch and 2-1/2-inch hitches. Push-to-lock operation also gives drivers a direct way to secure the pin without turning a key to engage it.

The 5/8-inch stainless steel pin pairs corrosion-resistant material with an extended shaft, making this a practical match for late-model trucks with heavy-duty tow packages and the listed 2-inch or 2-1/2-inch receivers. Its swivel head turns for easier key access, which can help when receiver orientation crowds the lock. Push-to-lock simplifies engagement; the stainless construction is the stated weather-resistance measure. The listing does not specify a dust cap or a second pin size.

Skip it if you need a 1/2-inch pin for a Class I or II receiver; Master Lock 2866DAT includes both 1/2-inch and 5/8-inch pins.

This suits owners of late-model trucks or trailers using a 2-inch or 2-1/2-inch receiver who value extended reach and swivel-head access. Its listed pin diameter is 5/8 inch, not a dual-size set.

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

#8

8. JUSTTOP 5/8-Inch Hitch Lock

• Weight: 14.1 oz

Best for: Anti-Rattle Receiver Setup.

Why it ranks #8: The 5/8-inch pin has 3-1/2 inches of effective length for 2-inch and 2-1/2-inch receivers, and four anti-rattle O-rings are included.

Four included anti-rattle rubber O-rings distinguish this JUSTTOP lock, giving buyers components aimed at reducing movement in a towing setup. Its 5/8-inch pin has 3-1/2 inches of effective length and is specified for most 2-inch and 2-1/2-inch Class III/IV receivers.

The long effective pin length and listed Class III/IV receiver compatibility make this a candidate for common truck, car, boat, RV, and tractor towing setups. Black electrophoretic-painted carbon steel is described as rigid and resistant to bending, supporting the lock’s anti-theft role. The four rubber O-rings are the key practical addition for buyers seeking to address hitch rattle. The available details do not state a key count or a specific locking sequence.

Skip it if you want a lock with a stated key sequence and dust cap; CZC AUTO's 5/8-inch receiver lock describes both operation and a capped key slot.

This JUSTTOP is a fit for Class III/IV owners who want O-rings alongside a long receiver pin for trailer, boat, or RV use. The listed fit does not cover smaller receiver classes.

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

#9

9. METOWARE 2-Inch Hitch Lock

• Weight: 10.5 oz

Best for: Compact 2-Inch Receiver Match.

Why it ranks #9: Its 5/8-inch pin and 2-3/4 inches of effective length target 2-inch receivers, but the listing excludes double-walled tubes.

A 2-3/4-inch effective pin length gives this METOWARE lock a specific fit for standard 2-by-2-inch receiver tubes. High-strength steel construction is presented as the core theft-deterrence feature for securing a trailer or ball mount in that receiver size.

The 5/8-inch diameter aligns with the product’s stated 2-inch receiver fit, while its 2-3/4-inch effective length helps define the compatible setup. METOWARE says the high-strength steel is intended to protect the trailer and ball mount from theft, making this a focused receiver-lock choice rather than a broad-size model. One significant fit condition is explicit: it is not compatible with double-walled receiver tubes. Check that receiver construction before choosing this pin.

Skip it if you have a double-walled receiver tube; CURT 23518 is specified for virtually any 2-by-2-inch receiver, without that stated exclusion.

Choose this METOWARE lock for a single-wall 2-inch receiver when a 5/8-inch steel pin is the intended fit. Its explicit double-wall exclusion is the deciding compatibility boundary.

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

#10

10. Rhino USA 2-Inch Hitch Pin

• Weight: 1.17 lb
• Material: Carbon Steel

Best for: Simple 2-Inch Class III/IV Security.

Why it ranks #10: This solid carbon-steel locking pin is listed for Class III and IV 2-inch hitches and includes two keys, but fit details are limited.

Solid carbon steel gives this Rhino USA pin its clearest advantage: a sturdy locking point for securing a ball mount in a standard 2-inch receiver. Its stated Class III and IV fit keeps the choice straightforward for owners of those common receiver sizes.

The pin is specified for 2-by-2-inch Class III and IV hitches, so buyers with that receiver can match it without navigating a broad list of sizes. Solid carbon steel supplies the stated security-minded construction, while the included two keys provide a spare for access. A dust cover is listed as a special feature, giving the keyway a covering when the lock is not being operated. This is a focused option rather than a multi-size kit.

Skip it if you use a 2-1/2-inch receiver; CZC AUTO's 5/8-inch lock is specified for both 2-inch and 2-1/2-inch receivers.

Choose this Rhino USA pin if you tow with a standard 2-inch Class III or IV receiver and want solid-steel construction with a dust cover. Its stated receiver fit is the key boundary.

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