Compared with the common nut, a contact surface between metals is added by adopting the protruded wing structure, plays a role of wedging and fastening and has more excellent theftproof performance.
凸出翼结构的采用比普通螺母增加了金属与金属间的接触面，起到楔入紧固的作用，防盗性能更卓越。
Compared with the common nut, a contact surface between metals is added by adopting the protruded wing structure, plays a role of wedging and fastening and has more excellent theftproof performance.
凸出翼结构的采用比普通螺母增加了金属与金属间的接触面，起到楔入紧固的作用，防盗性能更卓越。
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