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  2. Unified Thread Standard - Wikipedia

    en.wikipedia.org/wiki/Unified_Thread_Standard

    The standard designation for a UTS thread is a number indicating the nominal (major) diameter of the thread, followed by the pitch measured in threads per inch.For diameters smaller than ⁠ 1 / 4 ⁠ inch, the diameter is indicated by an integer number defined in the standard; for all other diameters, the inch figure is given.

  3. British Association screw threads - Wikipedia

    en.wikipedia.org/wiki/British_Association_screw...

    The Thury thread form had the crests rounded at ⁠ 1 / 6 ⁠ p and the roots rounded at ⁠ 1 / 5 ⁠ p so the thread angle was close to 47.5° but not exactly. This was simplified in the BA thread definition by defining the thread angle to be 47.5° exactly and the thread form to be symmetrical with a depth of ⁠ 3 / 5 ⁠ p.

  4. Screw thread - Wikipedia

    en.wikipedia.org/wiki/Screw_thread

    The pitch diameter of a thread is measured where the radial cross section of a single thread equals half the pitch, for example: 16 pitch thread = 1 ⁄ 16 in = 0.0625 in the pitch actual pitch diameter of the thread is measured at the radial cross section measures 0.03125 in.

  5. File:ISO and UTS Thread Dimensions.svg - Wikipedia

    en.wikipedia.org/wiki/File:ISO_and_UTS_Thread...

    A diagram of an ISO metric or Unified thread, showing dimensions relative to the pitch (P) and thread height (H). Due to different standards, ISO and UTS share the same geometry, but not absolute dimensions. Also shown is the location rounding permissible in internal (dark grey, top) and external (light grey, bottom) threads. Key. P: Pitch; H ...

  6. List of thread standards - Wikipedia

    en.wikipedia.org/wiki/List_of_thread_standards

    Unified Miniature Screw Threads: V Thread Form: 0.60 UNM ANSI/ASME B1.11-1958 (R2016) Microscope Objective Thread: V Thread Form ASME B1.13M-2005 (R2015) Metric Screw Threads: M Profile: V Thread Form ASME B1.15-1995 (R2003) Unified Inch Screw Threads (UNJ Thread Form) V Thread Form ASME B1.20.1-2013: Pipe Threads, General Purpose (Inch) Pipe ...

  7. ISO metric screw thread - Wikipedia

    en.wikipedia.org/wiki/ISO_metric_screw_thread

    A metric ISO screw thread is designated by the letter M followed by the value of the nominal diameter D (the maximum thread diameter) and the pitch P, both expressed in millimetres and separated by a dash or sometimes the multiplication sign, × (e.g. M8-1.25 or M8×1.25). If the pitch is the normally used "coarse" pitch listed in ISO 261 or ...

  8. List of screw and bolt types - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_and_bolt_types

    Nominal (thread) sizes range from 0.1875 to 0.375 in (4.763 to 9.525 mm) and lengths from 1.25 to 5 in (32 to 127 mm). Typically an installer uses a hammer drill to make a pilot hole for each concrete screw and a powered impact driver to drive the screw.

  9. List of sewing stitches - Wikipedia

    en.wikipedia.org/wiki/List_of_sewing_stitches

    types of hand sewing stitches. This is a list of stitches used in hand and machine sewing. The most common standard for stitches in the apparel industry is ASTM International ASTM D6193-16(2020) [1] The standard also covers various types of seams. Under this classification of stitches there are basic groups as follows: Class 100 - Single Thread ...

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