General description Flange head, cross-recessed black zinc plate self-tapping screws designed for various applications. These screws feature a Pozi Pan drive and are made from case-hardened steel for enhanced durability. Technical specifications Type: Self-tapping screws Head type: Flange head Drive type: Pozi Pan Material: Case hardened steel Size: No.10 x 3/4'' (4.8mm x 19mm) Quantity: 200 pieces Standard: BS 4174 CZ