... and fasteners , fasteners bolts nuts screws , stainless steel fastener1.What’s the specification of our Products ? MaterialCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum ... 10B21,1035,CH38F,1039,40ACR...Alloy steel are 35,40CrMo,SCM435,10B38...Stainless steel is SS201,202,302 ... time !Tel:+86-15917002605 Carbon Steel Stainless Steel Aluminum Screws and Fasteners Bolts Nuts Washers Rivets Pins