S5 Coupler Locks: The best security solution for your trailer.
Locks are custom tailored to each trailer coupler's design. Most S5 lock bodies are built with 1/4" structural steel, powder coated using Sherwin Williams powder, and secured with a puck-style lock.

LCS002-DEMCO - Demco 2  5/16in
Lock designed for the Demco 2 5/16" coupler commonly used on equipment and dump trailers. This coupler has a large black polycarbonate latch on top. The trailers will have a c-channel securing the coupler with 2 bolts. This lock not only locks the coupler but guards the bolts against being removed. Puck Lock is included in price.