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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.
Learn about the different types, uses, and specifications of national pipe thread standards, also known as American National Standard Pipe Thread. Find out how they are defined by ANSI / ASME standard B1.20.1 and how they differ from other pipe thread systems.
A thread pitch gauge is a tool for measuring the pitch or lead of a screw thread. It is not a precise measuring instrument, but a reference tool for determining the profile and category of a thread.
Learn about the most commonly used type of general-purpose screw thread worldwide, with the letter M followed by the nominal diameter and pitch in millimetres. Find the preferred sizes, tolerances, standards and examples of ISO metric screws, including M8 bolts.
BSP is a set of technical standards for screw threads that connect and seal pipes and fittings. It has two types of threads: parallel (BSPP) and taper (BSPT), and various sizes ranging from 1/16 to 18.
Learn about the different types and sizes of screws used to secure parts of a PC to the case. The #6-32 UNC screws are often found on 3.5" hard disk drives and the case's body.
The form of a Whitworth thread is based on a fundamental triangle with an angle of 55° at each peak and valley. The sides are at a flank angle of Θ = 27.5° perpendicular to the axis. Thus, if the thread pitch is p, the height of the fundamental triangle is H = p/(2tanΘ) = 0.96049106p.