Size: 1/2" - 4" Grade: O, A,DH,etc. Material: 45#, 40Cr, 42CrMo(B7), etc. Finish: Plain, Black, Zinc, H.D.G., etc.

Specification: ASTM A 563

             -Carbon and Alloy Steel Nuts

Dimensions: ANSI B 18.2.2

Size: 1/2" - 4"

Grade: O, A,DH,etc.

Material: 45#, 40Cr, 42CrMo(B7), etc.

Finish: Plain, Black, Zinc, H.D.G., etc.

Heavy hex nuts and heavy hex jam nuts-A563