... .2.2;Size: 1/4''–4’’; M6– M100Material: Carbon Steel, Alloy Steel, Stainless Steel, BrassGrade: ASTM A194 2, 2H, 4, 7, 7M,8, 8M ... ; A563 Gr. A, C, DHThread: M, UNC, UNFFinish: Black, H.D ... nut,Cap nut,Keep nut,Castle nutStandard: ASME, ASTM, IFI, DINMaterial: Low Carbon Steel, Alloy Steel, SS304, SS316Grade: SAE J995 Gr.2. 5 ...