STUD BOLT Material:JIS/SAE/DIN Use:standard part,fasteners,hardware,spring,mechanical manufacture and so on Description ... ,58CrMnB4,27MnMoVB, 65Mn,55CrSi,50CrV,60Si2Mn,CK67,60Si2CrVA,60Si2CrMnA.Use Standard parts; Fasteners; Hardware, spring, mechanical manufacture and so on.Size Diameter ...