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Technical Info

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.

Mechanical Joint T-Head Bolt Technical Information

This chart aligns with ANSI/AWWA C111/A21/11-00. If you have any questions about this chart or our products, please contact our sales team.

*Size and length are in inches. Torque is in foot-pounds.

Nominal Recommended Pipe Size Quantity Size Length Torque
3 4 5/8 3 45-60
4 4 3/4 3 1/2 75-90
6 6 3/4 3 1/2 75-90
8 8 3/4 4 75-90
10 8 3/4 4 75-90
12 8 3/4 4 75-90
14 10 3/4 4 1/2 75-90
16 12 3/4 4 1/2 75-90
18 12 3/4 4 1/2 75-90
20 14 3/4 4 1/2 75-90
24 16 3/4 5 75-90
30 20 1 6 100-120
36 24 1 6 100-120
42 28 1 1/4 6 1/2 120-150
48 32 1 1/4 6 1/2 120-150