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Measure external diameter. (A) Measure internal diameter. (B) Subtract B from A
The brake horsepower varies as a cube of the impeller diameter.
The major diameter is the diameter of the crest of the thread. Use a Vernier gage and mesure the diameter of the crest points of contact ( maximum external thread diameter). Unified National thread series defines the expected major diamter and tolerance. For internal threads ( nuts) the major diameter is the diameter of the roots of the thread.
ForgingForging Blank send to MachiningPreturning Inner Diameter & widthCNC Ist Set up for Outer Diameter & WidthCNC II nd Set up for Outer Diameter & widthHobbing DOPBroaching Minor IDChamferingDeburring
The M5 thread specification (in mm) is as follows: Nominal diameter d = D Pitch P root radius r pitch diameter d2=D2 minor diameter d3 D1 thread height h3 H1 drill diameter mm M 5.00 0.80 0.115 4.480 4.019 4.134 0.491 0.433 4.20