### Thread Yield and Tensile Strength Equation and Calculator

Fastener and Screw / Bolt Design, Formula and Calculations

The following Equation and Calculator will determine the working loads base on the ultimate yield strength threaded connections.

ALL calculators require a Premium Membership

Ultimate Strength of a thread

ymin = syield x a

Ultimate Tensile Strength of a thread

stensile = tmin x a

Shear Strength of a thread

Ssy = pr x syield

Where:

ymin = Minimum Yield of bolt threads engaged (lbs)

syield = Minimum yield strength of the bolt grade, ASTM, SAE, etc. (psi)

stensile = Ultimate Yield Strength (lbs)

tmin = Minimum tensile strength of the bolt grade, ASTM, SAE, etc. (psi)

Ssy = Working axial load of fastener bolt (lbs)

a = Stress area of thread (in2)

pr = Percent expressed as decimal, e.g. 60% = 0.6 - This is the factor of safety (FOS) for the design application

Related:

© Copyright 2000 - 2018, by Engineers Edge, LLC www.engineersedge.com
All rights reserved
Disclaimer | Feedback | Advertising | Contact

Date/Time:

User Reviews/Comments:

There are currently no comments available.

 Add a Comment (you must be logged in to post comment Register): Name: Email: (Optional) Comment: