This type of socketed screw, often called a “stripper bolt”, is used for a wide range of punch and die operations. HOLO-KROME’s shoulder screws are commonly used as fulcrums or pivots in machine designs that involve links, levers or other oscillating parts. Shoulder screws may be used as bearing pins. For swing arm or link, they provide perfect concentricity between threads and shoulder to produce a uniformly accurate assembly.