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1·Top view of bevel headed, hexagonal head set screw. Selection box represents thread diameter.

斜切六角螺钉的俯视图。选择框代表螺纹直径。

2·If neither part is threaded a bolt must be used: this consists of a screw with a hexagonal head.

如果两者皆不的部份被穿线于门闩一定被用：这用一个六角形的头有螺丝钉。

3·The connecting screw adopts a bone screw, and the head of the screw is outer-hexagonal, and the nut adopts an expanding hexagon nut or a hexagon nut.

所述连接螺钉采用骨螺钉，螺钉头为外六角。所述螺母采用膨胀六角螺母或六角螺母。