Trailer Hitch Locks 5/8in x 3-1/2in Pin - 4 Pack Keys Alike

In this review of the Trailer Hitch Locks 5/8in Dia 3-1/2in pins, the bottom line is straightforward: this four-pack is for vehicle owners who tow regularly and want a simple, durable anti-theft solution that also reduces rattle. The reviewer found the set most valuable for Class III and IV receivers and for anyone who prefers a push-to-lock design that does not require fiddling with the key to engage the pin. Its heavy construction and included o-rings make it especially useful for heavier trailers and for users who care about quiet towing.

Key Features

• Universal compatibility: Fits most Class III and IV 2in and 2-1/2in receiver tubes so one set covers many trucks, cars and boats.
• Push-to-lock design: The lock engages by pushing the pin through the hitch and requires only a slight key turn to release, making daily use quick and convenient.
• Heavy duty construction: Solid steel body with black electrophoretic finish and a zinc alloy tubular core provides robust resistance to forces encountered while towing.
• High load capacity: Rated to carry up to 30,000 lbs, offering confidence for heavier towing applications compared with common pin locks.
• Rattle prevention: Includes 32 rubber O-rings that keep the pin tight in the receiver and reduce shaking and noise during travel.
• Complete package: The four-pack arrives with 8 keys, four lock pins and additional heads for keyed alike convenience across multiple vehicles.

Who It's For

This set is aimed at owners of Class III and IV hitches who tow trailers, boats, or use truck-bed accessories and want a durable, easy-to-use locking pin that also minimizes rattling. Fleet operators or families with multiple tow vehicles will appreciate the keys alike configuration and the four-pack quantity that lets them lock several hitches with the same key.

Those who should look elsewhere include owners of smaller receivers outside the 2in to 2-1/2in range or users who need electronic or keyed-alike systems integrated with vehicle security modules. If you require a decorative or lightweight pin for occasional, low-load use, a simpler non-locking pin may be more cost effective.

Pros & Cons

Pros

• Solid build quality and heavy-duty materials give the feel of a professional-grade hitch lock.
• Push-to-lock operation makes installation fast and reduces fumbling with keys while hooked up.
• Included O-rings noticeably cut down on rattling and improve fit in the receiver.
• Four-pack with keys alike provides convenient coverage for multiple vehicles or spares.

Cons

• Lockability impressions are mixed among some users, so those requiring the highest tamper resistance may prefer additional security measures.
• The relatively heavy design may be overbuilt for occasional light-duty towing where a simpler pin would suffice.

Specifications

Pin diameter	5/8in
Pin length	3-1/2in
Receiver fit	2in and 2-1/2in (Class III and IV)
Load capacity	Up to 30,000 lbs
Finish	Black electrophoretic paint
Included items	4 lock pins, 8 keys, 32 rubber O-rings, 4 upgrade lock heads

Our Verdict

For regular tow vehicle owners who need a dependable, no-fuss locking pin that also addresses trailer rattle, this four-pack is a solid value. The heavy construction, push-to-lock convenience and abundance of O-rings make it a practical choice for Class III and IV hitches, while the keys alike setup simplifies management across multiple vehicles.

Frequently Asked Questions

Will these pins fit my 2in receiver?
Yes, the 5/8in diameter and 3-1/2in length are intended to fit standard 2in and 2-1/2in Class III and IV receivers.

Do the O-rings reduce hitch noise?
Yes, the set includes 32 rubber O-rings designed to prevent rattling by keeping the pin snug in the receiver.

Are all keys the same?
Yes, the pack is supplied keys alike so the included 8 keys operate all four pins for convenient use across multiple hitches.