split cotter pin​

Cotter pins — also called split pins or cotter keys — are economical one-time fasteners made from bent wire. They secure clevis pins, shafts and hitch pins by inserting the folded end through a drilled hole and splaying the legs outward to lock assemblies in place. This short guide explains common cotter pin sizes, materials like stainless steel, typical applications (hitch pins, axles),…