Torque values for various grades and diameters of fasteners.

The following suggested tightening torques provide an excellent starting point for determining torque requirements. Remember, you may need to vary these numbers somewhat based on …

There are many varying factors which affect torque. The figures in this chart are safe figures for standard torque applications only. The chart below can be used to convert foot-pounds to …

Bolt Torque Chart showing suggested torque values and corresponding bolt clamping forces for various sizes and specifications of fasteners.

Torque specifications, especially for critical joints, should be determined under actual assembly conditions due to the many variables involved which are difficult to predict and do affect the …

Dec 10, 2025 · Find torque specs for every major U.S. bolt size—including 1/2 bolt torque, 5/16 bolt torque, and 3/8 bolt torque—with clear tables for coarse and fine threads in Grades 2, 5, …

Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. AFT Fasteners is your trusted source for fastener information.

Use our bolt torque chart & calculator to avoid joint failure. Learn torque specs, the role of lubrication & prevent over or under-torquing.

Bolt torque depends on: Bolt size, type and grade Lubrication (a low friction factor must be considered with MoS2-based grease) The given bolt torques are based on the 90% of the bolt …

Find suggested starting torque values for different bolt sizes, threads per inch, and materials.