... delivery bolt and nut 输送端螺栓和螺母 double nut bolt 双头带帽螺栓 eye bolt and nut 眼螺栓及螺母 ...
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double-nut bolt 双帽螺栓
TAPER DOUBLE NUT BOLT 锥形双螺母螺栓
Through the failure analysis of connecting bolt of down rod, it points out that it is not correct to put the thinner nut outer side if the double nut anti-loose method is adopted.
通过对游梁式抽油机对接式连杆下接头连接螺栓的失效分析，指出了采用双螺母防松时，将薄型螺母放置在外侧是不恰当的。
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