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This Standard provides essential specifications and dimensions for the gauges used on Unified inch screw threads UN [unified] and UNR [external threads only] thread form, and covers the specifications and dimensions for the thread gauges and measuring equipment listed in Tables 1 and 2. The basic purpose and use of each gauge are also described.
A ring gauge is a cylindrical tool for checking the diameter of a cylindrical object. Learn about the types, accuracy grades, and applications of ring gauges in metalworking.
A go/no-go gauge is an inspection tool that checks a workpiece against its allowed tolerances via a go/no-go test. It has two tests: one that passes and one that fails the workpiece. Learn about different types of go/no-go gauges and their applications.
British Standard Whitworth (BSW) is an imperial-unit-based screw thread standard, devised and specified by Joseph Whitworth in 1841 and later adopted as a British Standard. It was the world's first national screw thread standard, and is the basis for many other standards, such as BSF , BSP , BSCon , and BSCopper .
A comprehensive list of screw thread standards from various organizations and countries, with examples and types. Learn about the history, dimensions and profiles of different thread systems.
A thread gauge is a tool to measure the pitch or lead of a screw thread. Learn how to use a thread gauge, the types of thread gauges, and the difference between thread pitch and thread angle.
Learn about the different types, uses, and specifications of national pipe thread standards, also known as American National Standard Pipe Thread. NPT is a tapered thread form for threaded pipes and fittings, while NPS is a straight thread form for rigidity and sealability.
ISO 965 is an ISO standard for the basic profile of metric screw threads. It specifies the limits and fits for standard metric coarse and fine threads from 1mm to 39mm diameter.