Countersunk flat head screws common head style with cross recess - part 1 : steel of property class 4 . 8 十字槽沉头螺钉第1部分:钢4 . 8级
Flat head screw 扁头螺丝
Flat head rivet 扁头铆钉
Aerospace ; rivet calculation values , static load , for blind rivets with flat head , single shear 航空航天.平头的单向剪切盲铆钉用静载荷铆接计算值
Specification : flat head cold - flow model , countersunk head cold - flow model , primary drawing mould , pole - shorten model , etc 规格：平头冷墩模、沉头冷墩模、一序冲顶模、缩杆模等。
