raised head screw 凸头螺丝 ; 半沉头木螺钉
westbank raised head screw 凸头螺丝
raised countersunk head screw 半沉头螺钉
raised head machine screw 突头机器螺钉
slotted raised countersunk head screw 开槽半沉头螺钉
recessed raised countersunk-head self-cutting screw 十字槽凸头埋头自攻螺钉
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