How To Measure Thread Size Of A Nut. Metric thread sizes are specified by diameter and pitch, which is the space between threads. Measure across the widest opening the threads make.
Measure the outside diameter of the bolt threads using a vernier caliper. But neither the external threads of the bolt nor the internal threads of the nut are exactly.500 in diameter. The easiest way to measure a nut or washer is to actually verify the thread diameter and pitch measurements of your bolt or stud that matches with the nut and washer.
Set the nut on a flat surface.
Thread angle (if it is triangular) pitch; For the size m6 × 1 mm, the pitch is coarse; Add to cart add to cart add to cart add to cart add to cart customer rating: H = rivet nut head diameter.