十字槽沉头机丝牙螺钉 Cross recessed countersunk head screw 十字槽沉头三角牙螺钉 Cross recessed countersunk head triangular screw ..
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slotted countersunk head screw 开槽沉头螺钉 cross recessed countersunk head screw 十字槽沉头螺钉 ; 十字槽沉头机丝牙螺钉 slotted raised countersunk head screw 开槽半沉头螺钉 ..
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