slotted hex screw 外六角一字螺丝

British system hex screw 英制外六角螺丝

HEX MACHINE SCREW NUT 机械螺丝用六角螺帽

Hex Screw Hex Screw 六角头螺丝

metric hex screw 公制外六角螺丝

hex head screw [机] 六角头螺钉 ; 六角螺钉

HEX SOCKET HEAD SHOULDER SCREW 高张力螺丝 ; 等高螺丝

Hex cap screw 六角头螺钉 ; 螺丝

hex head set screw 六角头止动螺钉