4-40X1/4 Phillips Oval Head Machine Screw Fully Threaded Black Oxide (Pack Qty 10,000) BC-0404MPOB

Phillips Oval Head Machine Screw Fully Threaded Black Oxide

A straight shank fastener with external threads designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Machine screws form a fastening superior in strength to spaced thread screws.