A high-strength bolt
By designing high-precision threads, anti-corrosion layers, and a flipping mechanism on the bolts, the problem of tightening and disassembling caused by bolt head deformation and stripping is solved, achieving efficient and stable tightening operation and improving the applicability and maintainability of the bolts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANZHOU HONGYU MASCH MFG CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-06-02
AI Technical Summary
Bolt heads are prone to deformation and stripping, making tightening and disassembly difficult, time-consuming and labor-intensive.
A high-strength bolt was designed with a high-precision thread and an anti-corrosion layer on the screw. A rotating plate was rotatably installed inside the bolt head. The rotating plate was equipped with a flipping mechanism, including a rotating groove, a rotating rod and a disc, which was used to drive the rotating plate to flip and provide additional screwing grooves to solve the problem of stripped threads.
It enables efficient and stable tightening operations even when the bolt head is deformed and stripped, improving tightening efficiency and convenience, and saving time and labor costs.
Smart Images

Figure CN224315338U_ABST