fasteners bolts nuts screws 1.ISO,ANSI,CE,DIN, ... ,screws and fasteners ,fasteners bolts nuts screws .1.What’s the specification of our Products ? MaterialCarbon steel,Stainless steel,Alloy steel ... 1039,40ACR...Alloy steel are 35,40CrMo,SCM435,10B38...Stainless steel is SS201,202,302,304,316...copper is ... me any time !Tel:+86-15917002605 Carbon Steel Stainless Steel Screws and Fasteners Bolts Nuts