Stud Bolts / Heavy Hex Bolts

Standard	Grade	Size Range
ASTM A320	L7, L7M	1/4″ to 4” / M4 to 64
ASTM A193	B7, B7M, B5, B6, B16, B8, B8M, B8C, B8T	1/4″ to 4” / M4 to 64
ASTM 453	660 A, B, C & D	1/4″ to 4” / M4 to 64
ASTM 450	B21	1/4″ to 4” / M4 to 64
ASTM B637	N07080, N07725, N09925	1/4″ to 4” / M4 to 64
ASTM A182	UNS S31803, UNS S32760	1/4″ to 4” / M4 to 64
ASTM A325	A, B, C & D	M12 to 36
ASTM A307	A, B & C	1/4″ to 4”