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2. 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 ...

3. 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 ...

4. Sewing machine needle - Wikipedia

   en.wikipedia.org/wiki/Sewing_machine_needle

   Needle has distinct "wings" on either side of the eye which hold the fabric open. Often used on hems and borders, and for decorative finishing. A larger size needle will leave a larger hole in the final piece of sewn fabric. Leather: These have a distinct triangular point to help the needle make a large, clean hole in non-woven materials like ...

5. United States Standard thread - Wikipedia

   en.wikipedia.org/wiki/United_States_Standard_thread

   [5] The metric standard used the same thread geometry as the USS standard but differed in that the dimensions and pitch were based on metric units. In 1906, the A.L.A.M developed what would be the SAE thread standard for threaded fasteners based on the USS standard but with a finer thread pitch. [6] [7]

6. Screw thread - Wikipedia

   en.wikipedia.org/wiki/Screw_thread

   Similarly, M10 (10 mm nominal outer diameter) as per ISO 261 has a coarse thread version at 1.5 mm pitch and a fine thread version at 1.25 mm pitch. The term coarse here does not mean lower quality, nor does the term fine imply higher quality. The terms when used in reference to screw thread pitch have nothing to do with the tolerances used ...

7. Yarn weight - Wikipedia

   en.wikipedia.org/wiki/Yarn_weight

   USA [5] UK [6] Australia [7] Germany [citation needed] m/100g [8] Wraps per Inch, [8] [9] Recommended knitting needle size, mm, [5] [8] Recommended crochet hook size, mm [5] Other names used, [5] [8] 0 or Lace 1 ply More than 800 40+ wpi 1.5 - 2.5 1.5 - 2.5 Single, Cobweb, Thread, Zephyr 0 or Lace 2 ply 2 fädig (ply) 600-800 30-40 wpi 1.5 - 2. ...