花的姿态zqr
平头、圆头、机牙、自攻牙、加硬、钢、锌、黑锌、十字、一字Thehead,machinetoothofthecrewcut,circle,fromoffendatoothandaddhard,steel,zinc,blackzinc,tenwords,oneword
奔跑de小土豆
A: Machine Screw: 机械螺丝 B: Tapping Screw: 自攻螺丝 (分使用于金属与使用于塑料二种) B-1: Sheet Metal Tapping Screw. (铁板牙自攻螺丝) B-2: Plastic Tapping Screw. ( 塑料用, 自攻螺丝) C: Wooden Screw : 木工螺丝 D: Drywall Screw : 水泥墙螺丝 E: Self Drilling Screws 钻尾螺丝（不锈钢钻尾螺丝，复合材料钻尾螺丝）E-1:STAINLESS STEEL SELF DRILLING SCREWS 不锈钢钻尾螺丝E-2:Bi-Metal Self Drilling Screws 复合材料钻尾螺丝
