Linch Pin And Chain

Linch Pins are fasteners used to prevent the wheel or other part from sliding off the axle which it is riding. They are also commonly known as quick pins or lynchpins, they serve as a self-locking pin inserted crosswise as through the end of an axle or shaft.  LInchPins are often used to attach tractor implements, secure trailer couplers, among a large variety of other applications where quick connect and disconnect between mating parts, is needed.