- allen screw
- allen type socket screw
- inner hexagon screw
- socket head cap screw
- socket head screw
- socket hexago screw
- socket hexagon screw
- 内: inner; inside; within
- 六角: hexagonal
- 螺钉: nut bolt; screw; screw faste ...
- 合金钢内六角螺钉: standard specification for alloy steel socket-head ca screws; standard specification for alloy steel socket-head cascrews
- 圆柱头内六角螺钉: hexagonal socket head cascrew; socket cap screw
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