Includes Low Head, Button Head, and Flat Head Screws, as well as special Socket Cap Screws such as Vented, Drilled Head, Self-Locking, and more.
包括低压头，半圆头及平头螺丝以及特殊内六角圆柱头螺钉如排空，钻孔头，自锁，等等。
The socket head wrench is particularly applicable to socket head cap screws with smaller size and smaller moment.
本 实用新型特别适用于尺寸较小，所需力矩不太大的内六角螺钉。
Different types of products include high strength bolts, hex bolts, hex socket head cap screws, foundation bolts, stud bolts, U bolts, bolts for electric power steel tower, bolts for oil well, etc.
高强度螺栓、钢结构螺栓、外六角螺栓、内六角螺栓、地角螺栓、双头螺栓、U型螺栓和电力铁塔螺栓、油井上用的各种专用螺栓。
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