片语
hexagon headed bolt六角头螺栓
hexagon n bolt六角螺栓
Hexagon Socket Bolt内六角螺钉
Inword hexagon headed bolt内六角螺桿
Hexagon flang bolt六角法兰螺栓
fillister hexagon head bolt六角头部带槽螺栓
finished hexagon head bolt光六角螺栓
semifinished hexagon head bolt半光六角螺栓
oval hexagon head bolt椭圆形六角螺栓