Shop Now 1/4-20 x 1/2″ Security Machine Screw – Flat Torx Plus Head – Alloy Steel – Black Oxide – FT – 100 Pk

Security fasteners provide an added level of security by their drive design that prevents removal with ordinary screw drivers. Maximum torque transfer & positive tool engagement means easier drive installation with less pressure & slippage. Requires matching driver bit.
Flat Head screws install flush with metal surfaces or countersinks with softer materials for a clean appearance.