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Screw Length Tolerences


Machine Screws

Nominal Screw Size O thru l2 1/4 thru 3/4
Nominal Screw Length Tolerance on Length
Up to 1/2 in., Incl.
Over 1/2 to 1 in., Incl.
Over 1 to 2 in., Incl.
Over 2 in.
-0.02
-0.03
-0.06
-0.09
-0.03
-0.03
-0.06
-0.09
Machine Screws



Type A - AB

Nominal Screw Length Tolerance on Length
Up to 1 in., Incl.
Over 1 in.
+ 0.03
+ 0.05
Type A - AB Screws



Type B, F, H-L 1, 25 and 23

Nominal Screw Length Tolerance on Length
Up to 3/4 in., Incl.
Over 3/4 to 1-1/2 in., Incl.
- 0.03
- 0.05
Type B, F, H-L, 1, 25, 23 Screws



Type U

Nominal Screw Length Tolerance on Length
Up to 3/8 in., Incl.
Over 3/8 in.
+ 0.02
+ 0.03
Type U Screws



Wood Screws

Nominal Screw Length Tolerance on Length
Up to 5/8in., Incl.
Over 5/8 to l-1/2 in., Incl.
Over l-1/2 to 2-3/4 in., Incl.
Over 2-3/4 to 5 in., Incl.
-0.03
-0.05
-0.06
-0.09
Wood Screws


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