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