Length Tolerances for Bolts

Nomianal Length	Nominal Size
	1/4 to 3/8	7/16 and 1/2	9/16 to 3/4	7/8 to 1	1 1/8 to 1 1/2	Over 1 1/2
Up to 1 in., incl.	+0.02 -0.03	+0.02 -0.03	+0.02 -0.03	... ...	... ...	... ...
Over 1 in. to 2 1/2 in., incl.	+0.02 -0.04	+0.04 -0.06	+0.06 -0.08	+0.08 -0.10	+0.12 -0.12	+0.18 -0.18
Over 2 1/2 in. to 4 in., incl.	+0.04 -0.06	+0.06 -0.08	+0.08 -0.10	+0.10 -0.14	+0.16 -0.16	+0.20 -0.20
Over 4 in. to 6 in., incl.	+0.06 -0.10	+0.08 -0.10	+0.10 -0.10	+0.12 -0.16	+0.18 -0.18	+0.22 -0.22
Longer than 6 in.	+0.10 -0.18	+0.12 -0.18	+0.14 -0.18	+0.16 -0.20	+0.22 -0.22	+0.24 -0.24

Length Tolerances for Screws

Nomianal Length	Nominal Size
	1/4 to 3/8	7/16 and 1/2	9/16 to 3/4	7/8 to 1	1 1/8 to 1 1/2	Over 1 1/2
Up to 1 in., incl.	+0.00 -0.03	+0.00 -0.03	+0.00 -0.03	... ...	... ...	... ...
Over 1 in. to 2 1/2 in., incl.	+0.00 -0.04	+0.00 -0.06	+0.00 -0.08	+0.00 -0.10	+0.00 -0.12	+0.00 -0.18
Over 2 1/2 in. to 4 in., incl.	+0.00 -0.06	+0.00 -0.08	+0.00 -0.010	+0.00 -0.14	+0.00 -0.16	+0.00 -0.20
Over 4 in. to 6 in., incl.	+0.00 -0.10	+0.00 -0.10	+0.00 -0.10	+0.00 -0.16	+0.00 -0.18	+0.00 -0.22
Longer than 6 in.	+0.00 -0.18	+0.00 -0.18	+0.00 -0.18	+0.00 -0.20	+0.00 -0.22	+0.00 -0.24