帽螺钉 meaning in Chinese

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Hexagon socket button head cap screws metric series
米制内六角圆头带帽螺钉
Hexagon socket head cap screws with metric fine pitch thread
带米制细牙螺纹的六角凹头帽螺钉
Fasteners - part standard cap screws , hex bolts , and hex nuts
紧固件.零件标准帽螺钉六角头螺栓和六角螺母
Socket head cap screws metric series
米制凹头带帽螺钉
Diameters of counterbores for hexagon socket head cap screws and screws with cheese head or pan head ; manufacturing dimensions
六角凹头有帽螺钉和圆头螺钉或大柱头螺钉用沉孔直径