Quickly calculate assembly torque and installation torque specifications for most common fastener sizes across various materials and fastener grades, all based on methodology published by the NASA Glenn Research Center.
Choose the thread size and material of your fastener from a list of imperial and metric 60° thread sizes and grades.
Select the material the fastener threads into. This material's shear strength determines the failure point of the internal threads.
Enter the depth the fastener threads into the parent material. At long engagements the fastener breaking is the limiting factor, at short engagements thread stripping is the primary failure mode.
