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You are here: Home / Structural Bolting / Bolt Length Estimation Table for F3125 Grade A325 and A490 Bolts

Bolt Length Estimation Table for F3125 Grade A325 and A490 Bolts

November 1, 2017 By Birmingham Fastener

This table can be used as a guide for bolt length estimation for our structural bolts. Add the length below to grip to determine bolt length required. If beveled washers are used, add an additional 5/16 inch to the no washer column for each bevel washer. If you have any questions, please contact our sales team.

Nominal
Bolt
Diameter
No Washer One Washer Two Washers
1/2 11/16 55/64 1 3/64
5/8 7/8 1 1/32 1 3/16
3/4 1 1 5/32 1 5/16
7/8 1 1/8 1 9/32 1 7/16
1 1 1/4 1 13/32 1 9/16
1 1/8 1 1/2 1 21/32 1 13/16
1 1/4 1 5/8 1 25/32 1 15/16
1 3/8 1 3/4 1 29/32 2 1/16
1 1/2 1 7/8 2 1/32 2 3/16
Contact our Sales Team to Discuss Your Next Project

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Filed Under: Structural Bolting Tagged With: charts, resources, structural bolting, structural bolts

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