Best Hitch Pin Locks for Common Receiver Sizes

#1 · Best Overall

1. CZC AUTO Trailer Hitch Pin Lock

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

Best for: Weather-exposed Class III and IV setups.

Why it ranks #1: Its 5/8-inch pin and 3-1/2-inch effective length fit Class III and IV 2-inch and 2-1/2-inch receivers, with a rubber key-slot cap.

A rubber key-slot cap protects the CZC AUTO lock opening from moisture, dust, and rust, making that detail useful for an outdoor towing setup. The 5/8-inch pin has a 3-1/2-inch effective length and is specified for Class III and IV receivers measuring 2 or 2.5 inches.

The 5/8-inch pin and 3-1/2-inch effective length cover the stated 2-inch and 2.5-inch Class III and IV receiver sizes. Black electrophoretic-painted carbon steel supplies the listed rigid construction, while the 360-degree rotating head makes the lock easier to handle from different angles. The rubber cap helps keep moisture, dust, and rust away from the keyhole. For locking, turn the key and let the pin pop up; after hearing the click, pull the head to check engagement.

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

This CZC AUTO lock suits Class III or IV owners who want a rotating head and covered key slot for a 2-inch or 2.5-inch receiver. Its stated fit does not cover smaller receiver classes.

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

#2 · Best Anti-Rattle Fit

2. Vehiclex Trailer Hitch Pin Lock

• Weight: 1.25 lb

Best for: Anti-rattle 2.5-inch receiver owners.

Why it ranks #2: A 3-1/8-inch effective span suits 2-inch to 2.5-inch receivers, and five rubber O-rings adjust to receiver size to reduce rattling.

Five adjustable rubber O-rings give the Vehiclex lock a direct way to address hitch rattling while accommodating receiver size. Its 3-1/8-inch effective span is listed for 2-inch and 2.5-inch receivers, and the carbon-steel pin has a protective black electrophoretic finish.

The 3-1/8-inch effective span is specified for 2-inch and 2.5-inch receivers, while the 5/8-inch pin suits the stated Class III and IV use. Five rubber O-rings adjust against receiver size to reduce rattling noises, a practical benefit for bike racks, boat trailers, campers, and cargo carriers named in the listing. Black electrophoretic paint helps prevent pin corrosion, and the rubber cap shields the key slot from dust, grime, and mud. Two keys are included.

Skip it if you need a 3-1/2-inch effective pin length; CZC AUTO model 13 lists that length for 2-inch and 2.5-inch Class III and IV receivers.

Choose Vehiclex for a compatible 2-inch or 2.5-inch setup where adjustable O-rings and a capped key slot matter. Its effective span is 3-1/8 inches, so check receiver dimensions before choosing.

Listed on Amazon as: Vehiclex Trailer Hitch Pin Lock for 2" and 2.5" Receiver, Class III & IV

#3

3. JUSTTOP Trailer Hitch Receiver Pin Lock

• Weight: 14.1 oz

Best for: Anti-rattle 2.5-inch receiver setups.

Why it ranks #3: The 5/8-inch pin and 3-1/2-inch effective length target most 2-inch and 2-1/2-inch Class III and IV receivers; four O-rings are included.

Four anti-rattle rubber O-rings distinguish this JUSTTOP hitch lock, helping address movement and noise as the pin sits in the receiver. Its 5/8-inch pin has a 3-1/2-inch effective length and is listed for most Class III and IV 2-inch and 2.5-inch receivers, offering broader stated receiver coverage.

The 3-1/2-inch effective pin length and 5/8-inch diameter make this a match for the listed Class III and IV 2-inch and 2.5-inch receiver sizes. Four rubber O-rings let users adjust against receiver movement, a practical aid for reducing rattling while towing. Black electrophoretic-painted carbon steel supplies the stated rigid construction, and the upgraded tubular key system provides the lock’s tamper-resistant access. Together, these details support a flexible receiver setup with noise control built in.

Skip it if you need a stainless-steel pin with a swivel head; Master Lock 1469DAT pairs stainless construction with a rotating head.

This JUSTTOP model suits Class III or IV owners who need the listed 2-inch or 2.5-inch fit and want O-rings to manage rattling. Check that receiver class and dimensions match its stated range.

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 Steel Build

4. Master Lock 1469DAT Receiver Lock

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

Best for: Stainless-steel receiver owners.

Why it ranks #4: Its 5/8-inch pin has a 3-1/2-inch shaft for 2-inch and 2-1/2-inch hitches, and stainless steel construction resists corrosion.

Stainless-steel construction gives the Master Lock 1469DAT its clearest distinction, with corrosion resistance suited to a hitch exposed to weather. Its swivel head provides easier access around the lock, while the 5/8-inch pin and extended shaft are listed for 2-inch and 2.5-inch receivers on heavy-duty tow setups.

The 5/8-inch stainless-steel pin resists corrosion, a useful material choice for a receiver lock that stays outdoors between towing trips. Its 3-1/2-inch shaft is specified for 2-inch and 2.5-inch hitches, supporting those extended receiver applications without relying on a shorter pin. Push-to-lock operation simplifies securing the assembly, and the swivel head can be turned for easier key access when nearby vehicle or hitch hardware makes a fixed head awkward.

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

Pick the 1469DAT for a heavy-duty tow package using a 2-inch or 2.5-inch receiver, especially if stainless steel and adjustable key access matter. Its 5/8-inch pin suits the stated larger receiver fit.

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 · Best Two-Pack

5. TowWorks 79632 Keyed Alike Set

• Weight: 2.3 lb
• Material Type: Alloy Steel
• Material: Alloy Steel

Best for: Keyed-alike two-hitch households.

Why it ranks #5: Two keyed-alike 5/8-inch locks provide a 3-1/4-inch active span for Class III and IV 2-inch and 2.5-inch receivers.

Two keyed-alike locks make the TowWorks 79632 set useful when securing more than one compatible hitch without carrying separate keys. Each 5/8-inch pin has a 3-1/4-inch maximum active span for Class III and IV 2-inch or 2.5-inch receivers, with a spring clip required for use.

The two locks share a keying arrangement, simplifying access when a vehicle or household uses multiple compatible hitches. Their 5/8-inch pins have a 3-1/4-inch maximum active span and are listed for Class III and IV receivers measuring 2 inches or 2.5 inches. Alloy-steel construction and zinc-plated internal and black electrophoresis external finishes are specified. The spring clip must be used, and the listing excludes several adjustable hitch and pintle-hook configurations, so those exclusions matter before installation.

Skip it if you have a CURT 45900 channel hitch or FASTWAY adjustable hitch; TowWorks 79831 is the listed longer-span option for many adjustable setups, though it also excludes FASTWAY.

This set suits Class III and IV owners who need two locks with one key arrangement and compatible 2-inch or 2.5-inch receivers. Use the spring clips and check the listed adjustable-hitch exclusions.

Listed on Amazon as: 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 with 2" and 2.5" Receivers, 2-Pack

#6

6. CURT 23518 Barbell Hitch Lock

• Weight: 10.2 oz

Best for: Quick-lock 2-inch receiver users.

Why it ranks #6: This 5/8-inch lock is sized for 2-inch receivers with 2.85 inches of usable pin length and a simple quarter-turn activation.

A quarter-turn activates the CURT 23518’s lock, making it a practical pick for owners who frequently remove or reinstall a hitch accessory. The 5/8-inch barbell-style pin has 2.85 inches of usable length and is listed for virtually any 2-inch receiver, with high-strength steel for theft deterrence.

The 1/4-turn lock activation keeps securing and releasing the pin straightforward when switching between a ball mount and another hitch accessory. Its 5/8-inch diameter and 2.85-inch usable length are specified for virtually any 2-inch receiver, so buyers can compare those dimensions with their setup. High-strength steel supplies the stated construction for deterring theft, while the barbell-style head presents a substantial locking profile. The listing does not extend this fit to 2.5-inch receivers.

Skip it if you use a 2.5-inch receiver; Vehiclex lists compatibility with both 2-inch and 2.5-inch receivers and includes anti-rattle O-rings.

The CURT 23518 fits drivers who want quick quarter-turn operation on a 2-inch receiver for a trailer ball mount or hitch accessory. Its stated receiver fit is 2 inches, so check that boundary.

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

#7

7. METOWARE Trailer Hitch Lock

• Weight: 10.5 oz

Best for: Single-wall 2-inch receivers.

Why it ranks #7: Its 5/8-inch pin and 2-3/4-inch effective length fit virtually any 2-inch by 2-inch receiver, but not double-walled receiver tubes.

A 2-3/4-inch effective pin length is the METOWARE lock’s key fit detail, pairing a 5/8-inch pin with most 2-by-2-inch receiver tubes. High-strength steel adds a theft-deterrence measure for a trailer and ball mount, but its stated compatibility excludes double-walled receiver tubes.

The 5/8-inch diameter and 2-3/4-inch effective length are specified for virtually any 2-by-2-inch receiver, making those dimensions central to checking fit before installation. High-strength steel supports the lock’s stated theft-deterrence role while securing a trailer or ball mount. Its compatibility note matters in practice: double-walled receiver tubes are excluded, so owners with that construction should not assume a standard 2-inch opening is enough to establish a match.

Skip it if you have a double-walled receiver tube; CURT 23518 is listed for virtually any 2-inch receiver and has no double-wall exclusion in its supplied details.

This METOWARE lock is a fit for owners of a compatible 2-by-2-inch receiver who want a 5/8-inch high-strength-steel pin. Avoid it if your receiver tube is double-walled, an explicit compatibility exclusion.

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

#8 · Longest Pin Span

8. TowWorks 79831 Long-Span Lock

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

Best for: Adjustable hitch channel users.

Why it ranks #8: The 5/8-inch pin offers a 4-1/2-inch maximum active length for many adjustable hitches and channel mounts, with listed exclusions.

The 4-1/2-inch active span sets the TowWorks 79831 apart for adjustable hitches and channel mounts that need a longer locking pin. Its 5/8-inch steel pin is listed for several CURT channel-style hitches and adjustable pintle hooks, while a spring clip supports quick hitch changes without using the lock.

A 4-1/2-inch maximum active length gives this 5/8-inch pin reach for many adjustable hitches and channel-style mounts, including the listed CURT models and adjustable pintle hooks. The one-piece hardened-steel construction is specified for towing up to 20,000 pounds GTW, and a zinc-plated, black e-coated finish covers the pin. The spring clip offers a quick-change option when swapping hitches, though the product explicitly does not fit FASTWAY adjustable hitches.

Skip it if you use a FASTWAY adjustable hitch; TowWorks 79632 is listed for standard Class III and IV receivers instead of the 79831’s adjustable-hitch niche.

Choose the 79831 if your adjustable hitch or channel mount needs a 5/8-inch pin with a 4-1/2-inch active span. Verify the listed hitch dimensions and avoid it for FASTWAY adjustable hitches.

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

#9

9. Rhino USA 2-Inch Hitch Pin

• Weight: 1.17 lb
• Material: Carbon Steel

Best for: Straightforward 2-inch receiver security.

Why it ranks #9: Solid carbon steel and two included keys suit 2-inch Class III and IV hitches, but its listed fit is narrower than multi-size options.

Solid carbon steel is the defining feature of Rhino USA’s 2-inch hitch pin lock, giving Class III and IV receiver owners a locking alternative to a standard pin. Its stated 2-by-2-inch fit keeps the choice focused on common receiver dimensions, while the included two keys provide a spare for access.

The carbon-steel construction and tamper-resistant locking design address the central job of securing a trailer or hitch in a Class III or IV, 2-by-2-inch receiver. A dust cover helps shield the lock opening between uses, which is useful when the pin is exposed to outdoor conditions. The package includes two keys, so a second key is available without sourcing one separately. Its stated fit is specific: this is a 2-inch receiver option, not a pin listed for 2.5-inch receivers.

Skip it if you need a pin for a 2.5-inch receiver; JUSTTOP’s 5/8-inch, 3-1/2-inch pin is listed for 2-inch and 2.5-inch receivers.

Choose this Rhino USA lock if your Class III or IV setup has a 2-inch receiver and you want a carbon-steel pin with a dust cover. Its stated fit does not extend to 2.5-inch receivers.

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

#10

10. Master Lock 2866DAT Receiver Lock

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

Best for: Multiple receiver-class coverage.

Why it ranks #10: Two included pins cover 1/2-inch and 5/8-inch receiver holes across Class I through IV, but the listing does not give an effective span.

Two included pins—one 1/2-inch and one 5/8-inch—give the Master Lock 2866DAT a wider receiver-class range than a single-size lock. The smaller pin is rated for Class I and II towing up to 3,500 pounds, while the larger is rated for Class III and IV up to 10,000 pounds.

Having both 1/2-inch and 5/8-inch pins lets the same swivel-head lock serve the listed Class I through IV receiver sizes, provided the appropriate pin is selected. The supplied ratings distinguish the use cases: 3,500 pounds for the 1/2-inch pin and 10,000 pounds for the 5/8-inch pin. A push-to-lock mechanism simplifies locking, while the head rotates 360 degrees so the keyway can face forward. A weather-tight cap and seal protect the lock opening.

Skip it if you need stainless-steel construction and a 3-1/2-inch shaft for a 2-inch or 2.5-inch receiver; Master Lock 1469DAT lists those features.

This Master Lock suits owners who need one swivel-head lock body with pins for multiple receiver classes, from I through IV. Choose the pin that matches the receiver class and its stated rating.

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