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  2. British Association screw threads - Wikipedia

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

    They then rounded to 2 significant figures in metric and then converting to inches and rounding to the thousandth of an inch. This anticipated worldwide metrication by about a century. The design was first proposed by the British Association in 1884 [ 1 ] [ 2 ] with a thread angle and depth based on the Swiss Thury thread , [ 3 ] it was adopted ...

  3. United States Standard thread - Wikipedia

    en.wikipedia.org/wiki/United_States_Standard_thread

    United States Standard thread (USS thread), also known as Sellers Standard thread, [1] Franklin Institute thread [1] and American Standard thread, [2] is a standard for inch based threaded fasteners and washers. [3] The USS standard is no longer supported. It, together with the SAE fastener standard, was incorporated into the Unified Thread ...

  4. Unified Thread Standard - Wikipedia

    en.wikipedia.org/wiki/Unified_Thread_Standard

    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.

  5. Birmingham gauge - Wikipedia

    en.wikipedia.org/wiki/Birmingham_gauge

    The Birmingham gauge is also known as the Stubs Iron Wire Gauge or Birmingham Wire Gauge and is distinct from the Stubs Steel Wire Gauge and the British Standard Wire Gauge. It is commonly referred to simply as gauge (abbreviated as G ), [ 3 ] but this should not be confused with the French gauge , a separate system used for measuring the outer ...

  6. Torrington Company - Wikipedia

    en.wikipedia.org/wiki/Torrington_Company

    In the 1930s, a research engineer named Edmund K. Brown invented a new kind of needle bearing, which eventually became the majority of the company's business. [3] After World War II, in which the US had a large need for needle bearings for military aircraft like B-29 bombers, the production of bearings became the company's central product line.

  7. List of thread standards - Wikipedia

    en.wikipedia.org/wiki/List_of_thread_standards

    Hose Coupling Screw Threads - Inch: Pipe Thread Form ASME B1.21M-1997 (R2013) Metric Screw Threads - MJ Profile: V Thread Form BS 84: Tables of BS Whitworth, BS Fine and BS Pipe Threads: V Thread Form (55°) 1 ⁄ 4 ″-20 BSW ISO 68-1:1998: ISO general purpose screw threads—Basic profile—Part 1: Metric screw threads: V Thread Form ISO 68-2 ...

  8. Needle length for vaccines should vary based on weight. You ...

    www.aol.com/lifestyle/needle-length-vaccines...

    According to the Centers for Disease Control and Prevention, it is recommended that women over 200 pounds and men over 260 pounds get shots administered using a 1.5-inch needle, while the needle ...

  9. Go/no-go gauge - Wikipedia

    en.wikipedia.org/wiki/Go/no-go_gauge

    Snap go/no-go gauge for the OD of a cylindrical workpiece Thread snap gauge. Snap gauges are often used when a large quantity of work pieces must be inspected. [4] The snap gauge has four anvils or jaws, the first one or pair (outermost) are set using the upper limit (tolerance) of the part and the inner set adjusted to the lower limit of the ...

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