Shear Area Internal & External Thread  Formula per. Fed-STD-H28

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The following equations and calculator will determine the Shear Area For External Thread Screw or Fastener per. fed-stdh28 standard.

Equation

Where:

Kn max =
Maximum minor diameter of internal thread.
Es min =
Minimum pitch diameter of external thread.
Le =
Fastener thread engagement
n =
Number of threads per inch

Open: External Thread Shear Area Fed STD H28 Calculator


Shear Area For Internal Thread

Shear Area For Internal Thread

Where:

En max =
Maximum pitch diameter of internal thread.
Ds min =
Minimum major diameter of external thread.
Le =
Fastener thread engagement
n =
Number of threads per inch

Open: Internal Thread Shear Area Fed STD H28 Calculator