• Major & Minor Diameter

    Posted August 22, 2019 - Updated Dec 3, 2019

    Identifying Major Diameter The major diameter can be measured with a micrometer, caliper or steel rule. Major diameters are generally the first numbers found in thread designations. A 1/2-10 Acme thread, for example, has a major diameter of .500 in. Care must be taken to measure the major diameter on a section of the screw […]