1/4-20X3/8 Serrated Hex Flanged Washer Full Thread Grade 5 w/Head Markings Zinc (Pack Qty 3,000) BC-1406MWW5

Serrated Hex Flanged Washer Full Thread Grade 5 w/Head Markings Zinc

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.