stay-bolt tap 螺撑丝攻

stove bolt tap 炉用螺栓丝锥

stay bolt tap 螺撑丝攻 ; 撑螺栓丝锥

tap bolt 带头螺栓 ; 有头螺钉 ; 两端螺纹杆 ; 自攻螺栓

cover tap bolt 盖螺栓

Tap-bolt 锥体螺栓

hexagonal head tap bolt 六角头螺栓

shouldered tap bolt 带肩螺栓