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![aisc aisc](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/aisc.png?width=59&height=59&name=aisc.png)
![ASTM ASTM](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/ASTM_logo.png?width=70&height=54&name=ASTM_logo.png)
![awwa awwa](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/awwa-logo.png?width=51&height=53&name=awwa-logo.png)
![IFI IFI](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/IFI-new.png?width=164&height=47&name=IFI-new.png)
![MBMA MBMA](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/MBMA_logo_new.png?width=143&height=40&name=MBMA_logo_new.png)
![nsba nsba](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/nsba.png?width=57&height=57&name=nsba.png)
![rcsc rcsc](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/rcsc-new.png?width=128&height=25&name=rcsc-new.png)
![stafda stafda](https://bhamfast.com/hs-fs/hubfs/Birmingham_Fastener_December2023/Images/stafda.png?width=69&height=51&name=stafda.png)
At Birmingham Fastener, we aim to provide you with the knowledge and tools for your project. Our constantly expanding Fastener Learning Hub is full of information and insights for a variety of industries. View bolt length charts, read product comparisons, and find answers to your questions about fasteners.
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 |
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