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Bolt Tensile Stress Area Calculations

  • Published on Jan 30, 2025
  • 1 minute(s) read
  • Denis Tkalec
  • Tomislav Renic
  • Marko Bozac

For imperial:

Bolt tensile stress area calculations:

Symbol

Name

UoM

Source

A

Bolt tensile stress area

in2

Calculated.

D

Bolt nominal diameter

in

LOOKUP (based on Flange SIZE and CLASS RATING). See Stud Size Lookup.

n

number of threads per inch - TPI


LOOKUP (based on Flange SIZE). See TPI Lookup (based on Stud Size).

Note: Users can also directly enter a Bolt Tensile Stress Area. This user-entered value will then also be the value used in the Torque and Tensions calculations.

Example:

Determining the tensile stress area of a bolt for a mechanical assembly if:

Stud Size (D): 1.25 inches

Number of Threads: 7