Machine screws for fastnening applications come in zinc-plated steel and nylon materials. The screws come in flat-head, pan-head, binding-head, and washer/hex-head styles, with a choice of 2-56, 4-40, ...

Bolts and screws can be outfitted with a variety of different head styles. Which style an engineer specifies depends on several factors: the type of driving or installation equipment used, the type of ...