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ISO Stress Area Equation and Calculator

Engineering ANSI Hardware Design Data
Engineering Metric Hardware Design Data

ISO Stress Area Equation and Calculator
Proof load values are given in BS EN 20898-2:

Preview: Nominal stress area As Calculator

The nominal stress area As Calculator

The nominal stress area As is calculated as follows:

nominal stress area

where:
d2 = basic pitch diameter of the external thread (see ISO 724);
d3 = minor diameter of the external thread;

minor diameter of the external thread

where:
d1 = basic minor diameter of the external thread;
H = height of the fundamental triangle of the thread.

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