#4-40 X 1/4" Security Machine Screws, Flat Countersunk Undercut Head Tamper Resistant Drilled Spanner Drive, AISI 304 Stainless Steel (18-8), Includes Driver Bit

Machine screws are designed for applications with a pre-tapped hole or mated to a threaded nut.Type 304 stainless steel is defined as a Chromium-Nickel austenitic alloy.Stainless steel significantly improves resistance to tarnishing or corrosion.This...