Tapping Screws Screw:self tapping screws Size:3.5x16 to 6.3x150mm Material:carbon steel,stainless steel Finish:zinc plate. DetailsSelf Tapping Screw Product feature1. Standard: DIN6928: Hex washer head self-tapping screw DIN7982: Countersunk head self-tapping screw DIN7981: Pan head self-tapping screw2. Material: carbon steel(C1022), stainless steel(SS304,SS302,SS316,SS316L)3. Surface treatment: ...