Fastener Thread Pitch Circle Diameter Equation and Calculator
Fastener and Thread Design Menu | ISO Hardware Engineering Data
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Fastener Thread Pitch Circle Diameter Equation and Calculator
This equation and calculator will determine the thread pitch circle diameter from the Major diameter and the pitch per ISO 898-1:1999 standard.
Thread Pitch Circle Diameter
Where:
dp = Pitch circle diameter of thread
D = Major Diameter
p = 1 / Number of threads per inch (n)
Open Fastener / Thread Pitch Circle Diameter Formula and Calculation