1/4" Coupler Latch Locks

Product Description

Hitch Pin Lock Description

Thinkwell 1/4" Coupler Latch Lock (TKTC 1023A) is a compact anti theft security pin specially built for trailer coupler latches. Unlike hitch pin locks which secure the vehicle side hitch receiver, this latch lock physically blocks the coupler release handle, stopping unauthorized lifting of the coupler latch to prevent tow away theft when your trailer is unhitched and parked. Built from high strength steel, offered in multiple latch span variants, supports OEM & ODM customization, and covered by a 12 month factory warranty. Ideal for utility trailers, boat trailers, small RV campers and off road recovery equipment.


1/4" Coupler Latch Lock Key Features

Compact High Strength Steel Build 

Constructed of heavy duty high strength steel, available with zinc plated or powder painted surface finish for rust and corrosion resistance. Small form factor design, lightweight and easy to store inside glove box or tool bag. Resists prying and tampering for outdoor long term use.

Latch Specific Anti Tow Away Security 

1/4 inch lock pin diameter designed to pass through the coupler latch pin hole. Once locked, the coupler lever cannot be lifted open, so thieves cannot connect your parked trailer to another tow vehicle and drive it away. Works on parked, disconnected trailers (complementary product for hitch receiver locks).

Multiple Latch Span Options for Diverse Couplers 

Three standard latch span sizes in stock to fit varying coupler latch thickness and gap dimensions. Avoid wrong size mismatch; always measure your coupler latch before ordering.

Full Customization & Flexible Order Terms

· Zinc plated or powder painted surface finish; custom colors available

· Custom laser engraved logo, custom retail packaging for Amazon/e commerce sellers

· Multi pack configurations for fleet and wholesale buyers

· Small trial orders are warmly accepted

Factory Backed Quality & Export Grade Packaging 

12 month manufacturer warranty. Every unit passes pre shipment quality inspection. Packaging flow: individual box → export carton → pallet loading for safe ocean and land transit.



1/4" Coupler Latch Lock Size Variants

Model No. Lock Pin Diameter Latch Span(L)
TKTC 1023A 001 1/4" 7/8"
TKTC 1023A 002 1/4" 2-1/2"
TKTC 1023A 003 1/4" 2-1/2"

1/4" Coupler Latch Lock Installation Guide

1. Close your trailer coupler latch to normal locked position.

2. Align the lock pin hole on coupler latch, insert unlocked lock pin through the latch assembly.

3. Turn key to engage lock cylinder, remove the key. Confirm the coupler handle cannot be lifted.

4. Always verify locking status before leaving the trailer unattended.

5. Lubricate lock cylinder periodically if operating in coastal, dusty or wet environments.


Why Choose Thinkwell

Thinkwell focuses on trailer hardware and off road recovery accessories. We manage full chain production from raw material processing, machining, surface finishing to final QC. We welcome small trial orders as well as large volume wholesale. Custom logo, custom colors and retail ready packages are supported to satisfy e commerce merchants, offline retailers and project purchasers.

1/2" Trailer Hitch Lock

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Anti Theft Protection for Trailers