十字槽沉头螺钉 Cross Recessed Countersunk Head Screws
十字槽沉头螺钉(通用头型)- 4.8级,钢制,产品等级A级 Countersunk Flat Head Screws (Common Head Style) with Type H or Type Z Cross Recess - Product Grade A - Part 1: Steel Screws of Property Class 4.8
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