The utility model relates to a universal wrench screw-driver used for fastening hexagonal screws or bolts, and three surfaces of the universal wrench screw-driver are stressed.
本实用新型为一种紧固六角螺钉或螺栓的、三面受力的通用扳手。
2
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。
3
If neither part is threaded a bolt must be used: this consists of a screw with a hexagonal head.