Engineers Edge Thread Stress Area Calculator, 100 ksi or Less - Engineers Edge

Tensile Thread Stress Area Calculator - 100 ksi and less

Standard ANSI Hardware
Fastener - Bolt Design Calculations

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This calculator calculates the tensile stress area of a screw thread fastener. Use this calculator for materials less than 100,000 psi ultimate tensile strength.

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Negative Tolerance numbers indicate interference. 

This calculator will calculate the unknown for the given conditions. Two (2) inputs are required,   See the application illustration at bottom of page.

 The following are definitions for the elements:

At = tensile strength area of screw thread.

D = Basic major diameter, example;     .500 for a 1/2 - 13 UNC - 2B

n = Number of threads per inch
 

Equation:

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