常用紧固件英语常用紧固件英语六角螺丝(栓) HEX HEAD CAP SCREWS(HEX BOLTS)六角机械螺丝 HEX HEAD MACHINE BOLTS六角木牙螺丝 HEX LAG BOLTS四角螺丝 SQUARE HEAD BOLTST头螺丝 T HEAD BOLTS马车螺丝 CARRIAGE BOLTS环首螺丝 EYE BOLTS内六角孔螺丝 HEX SOCKET CAP SCREW...