Engineers Edge Fastener / Threaded Pitch Circle Diameter Formula and Calculation - Engineers Edge
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Fastener / Threaded Pitch Circle Diameter Formula and Calculation

Fastener and Thread Design Menu | ISO Hardware Engineering Data 
 ANSI Hardware Engineering Data |
Mechanics / Strength of Materials Menu

Screw thread Strength Calculations ISO 898-1:1999

Thread Pitch Circle Diameter

Where:

dp = Pitch circle diameter of thread
D  = Major Diameter
p  = 1 / Number of threads per inch (n)

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