... 2H, 4, 7, 7M,8, 8M; A563 Gr. A, C, DHThread: M, UNC, UNFFinish: Black, H.D.GPacking: bulk in ... coupling nut,Wing nut,Cap nut,Keep nut,Castle nutStandard: ASME, ASTM, IFI, DINMaterial: Low Carbon Steel, Alloy Steel, SS304, ... : SAE J995 Gr.2. 5, 8; A563 Gr. A,B,C,DH,A194 Gr.2H,2HM,4Class:4, 5 ... , 6, 8, 10,12Size: Inch Size; Metric SizeThread: M, UNC, UNFFinish: Plain, Black, Zinc Plated/ZP, Yellow Zinc ...