... End Bolt,Special Head Bolt,Bolt Maker ,M6 Bolt Dimensions1.What’s the specification of our Products ? MaterialsCarbon steel,Stainless steel,Alloy steel,Copper ... steel are 35k,45#,10B21,1035,CH38F,1039,40ACR...Alloy steel are 35,40CrMo,SCM435,10B38...Stainless steel is ... length :ordinary,It is less than 300mm .Threads/ ScrowsType "M","UNC","UNF","BSW"thread are available.Head typesHexagon head,Mushroom ...