... 1/2" 3.Finish:Zinc plated,H.D.G,black oxide etc Products information: Heavy hex nut Standard: ASME ... , 4, 7, 7M,8, 8M; A563 Gr. A, C, DHThread: M, UNC, UNFFinish: Black, H.D.GPacking: bulk in cartons (25kg ... , SS304, SS316Grade: 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, ...