螺丝钉:lag spike调整螺丝:plusminus screw尖端螺丝:pointed screw螺丝板牙:screw die螺丝灯头:screw holder螺丝车床:screw-cutting lath自攻螺丝:self tapping screw太阳能浴室肩部螺丝:shoulder bolt止付螺丝:stop screw攻螺丝机:tapping machines螺丝车床:thread-c