Machine Screw - 4-40 x 1/4" - Phillips Flat Head - 18-8 (A2) Stainless Steel - UNC - FT - 1000 Pack

Machine screws feature straight shank fasteners with external threads designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. fasteners are durably constructed of steel for long lasting reliability and strength.