Length Tolerances for Bolts

Nomianal LengthNominal Size
1/4 to 3/87/16 and 1/29/16 to 3/47/8 to 11 1/8 to 1 1/2Over 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 LengthNominal Size
1/4 to 3/87/16 and 1/29/16 to 3/47/8 to 11 1/8 to 1 1/2Over 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