點擊觀看大圖 四角頭螺絲 SD07 ASME B18.6.2 錐尾, 杯尾, 圓尾, 狗尾 Working Time: 75 ~ 90 days 碳鋼,合金鋼 M5~M20, length 300mm MAX (no.10~3/4”, 12” long MAX) M22~M36, length 240mm MAX (7/8~1-1/8”, length 8” MAX)