#4-40 x 1/2 in Spanner Flat Tamper Resistant Screw, 18-8 Stainless Steel, Plain Finish, 50 PK, Tamper-Pruf Screws, Mfr#: 121684

Tamper Resistant Screw, Head Type Flat, Material 18-8 Stainless Steel, Finish Plain, Drive Spanner, Thread Size #4-40, Fastener Length 1/2 in, Head Width 0.225 in, Head Height 0.067 in, Drive Size #4, Dimensional Standards ASME B18.6.3, Pack Size Small, Type Tamper Resistant Screw, Maximum Head Width 0.225 in, Minimum Head Width 0.195 in, System of Measurement Inch, Thread Type Coarse, Package Quantity 50