针对国内汽车企业对非金属嵌件锁紧螺母研究较少,扭矩设定不合理,联接可靠性不高等问题。通过拧紧试验对非金属嵌件锁紧螺母的扭矩系数,摩擦系数等进行研究,通过与普通螺母进行对比,使扭矩设定更加规范。通过横向振动试验,对比了非金属嵌件锁紧螺母与普通螺母及全金属自锁螺母的防松效果,为防松紧固件的选用提供了一定的参考。 In view of the domestic automobile enterprises to non-metallic inserts locknut less research, torque setting is unreasonable, connection reliability is not high and so on. Through the tightening test, the torque coefficient, friction coefficient and so on of the non-metallic insert lock nut were studied. Compared with the common nut, the torque setting was more standardized. Through the transverse vibration test, the anti-loose effect of the non-metallic insert lock nut and the ordinary nut and the all-metal self-locking nut is compared, which provides a reference for the anti-loosen fastener selection.