10 x 1/2 Tamper Resistant Torx Flat Head Sheet Metal Screw Steel Black (T-20)

10 x 1/2 Tamper Resistant Torx Flat Head Sheet Metal Screw Steel Black (T-20) . Tamper resistant self tapping/sheet metal screws provide an additional layer of security by their drive design, which prevents their removal with ordinary screw drivers or insert bits. These self tapping/sheet metal screws conform to ANSI/ASME B18.6.4.