ASTM A194 2H heavy hex nut 1.Material: medium carbon steel 2.Size:1/4"-2 ... Steel, Stainless Steel, BrassGrade: ASTM A194 2, 2H, 4, 7, 7M,8, 8M; A563 Gr. A, C, DHThread: M, UNC, UNFFinish: Black, H.D ... ,B,C,DH,A194 Gr.2H,2HM,4Class:4, 5, 6, 8, 10,12Size: Inch Size; Metric SizeThread: M, UNC, UNFFinish: Plain, Black, Zinc ...