valve spring retainer lock 阀弹簧锁夹

valve retainer lock 气门弹簧托盘锁扣

retainer lock pin 保持器锁销

spring retainer lock 弹簧底座销 ; 弹簧抵座销

lock valve spring retainer 气阀弹簧锁头

ball-lock retainer 球锁固定座

lock free retainer 无锁定护圈

retainer liftgate lock 举升门锁芯弹簧卡片

wedge lock retainer 楔型夹持器