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The nominal diameter of a threaded bolt is the diameter equal to the external diameter of the threads or the overall diameter of the bolt. It is a standard measurement used to identify and specify bolt sizes in engineering applications.
The calculator uses the formula:
Where:
Explanation: This formula calculates the nominal diameter of a bolt based on its core diameter, using a standard conversion factor of 0.8.
Details: Accurate calculation of nominal diameter is crucial for proper bolt selection, ensuring compatibility with nuts and threaded holes, and determining the appropriate torque specifications for bolted connections.
Tips: Enter the core diameter of the threaded bolt in meters. The value must be greater than zero. The calculator will compute the corresponding nominal diameter.
Q1: What is the difference between nominal diameter and core diameter?
A: The nominal diameter is the overall diameter of the bolt, while the core diameter is the smallest diameter of the thread, measured at the root of the threads.
Q2: Why is the conversion factor 0.8 used?
A: The 0.8 factor is a standard conversion ratio that relates the core diameter to the nominal diameter for most standard threaded bolts.
Q3: Is this formula applicable to all types of bolts?
A: This formula is generally applicable to standard metric and imperial threaded bolts, but specific bolt types may have slightly different conversion factors.
Q4: How accurate is this calculation?
A: The calculation provides a good approximation for standard bolts, but for critical applications, always refer to manufacturer specifications or standard thread tables.
Q5: Can this calculator be used for both metric and imperial units?
A: The calculator works with any consistent unit system, but the input must be in meters. For imperial units, convert to meters first or adjust the formula accordingly.