Heavy Hex Nuts

Standard	Grade	Size Range
ASTM A194	2H, 2HM, 6, 7L, 7ML, 16, 8, 8M, 8C, 8T	1/4″ to 4”
ASTM A194	6, 8, 8M, 8C, 8T (Class 1 & Class 2)	1/4″ to 4”
ASTM 453	660 A, B, C & D	1/4″ to 4”
ASTM B637	N07080, N07725, N09925	1/4″ to 4”
ASTM A182	UNS S31803, UNS S32760	1/4″ to 4”
ASTM A563	A, B, C, 8S, DH, 10S	1/4″ to 4” (M12 to M36)