cap of screw螺钉帽
cap p screw有头螺钉
cap head screw帽头螺钉
Cap-screw套螺母
Cap for Screw Hole螺丝孔小帽
hexagon socket cap head screw内六角圆柱头螺钉
screw cap and screw plug螺帽与螺塞
Hex cap screw六角头螺钉;螺丝
hexagon cap screw六角头螺钉;六角帽螺钉
N(名词) a screwed bolt with a cylindrical head having a hexagonal recess. The bolt is turned using a wrench of hexagonal cross section 帽螺钉