... ,8.8,9.8....... WASHER,STAINLESS STEEL WASHER,DIN 125 L PLAIN WASHER. A good non-standard fastenerS ... threads.Head typesHexagon head,Mushroom head,Pan head,Countersunk head,Bugle head,Oval head,Hex flange ... GP container :22.6T-25.5Tadditioal processes Washer assembly,Heat treatment,Baking hydrogen,Anti-slipping patch ... than 20 years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and so on ...