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2. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   Taps and dies are tools used to create screw threads, which is called threading. Many are cutting tools ; others are forming tools. A tap is used to cut or form the female portion of the mating pair (e.g. a nut ).

3. Die head - Wikipedia

   en.wikipedia.org/wiki/Die_head

   A die head is a threading die that is used in the high volume production of threaded fasteners. Die heads are commonly used on lathes, turret lathes, screw machines and CNC lathes. They may be used for either cutting a thread or rolling a thread. They may also be used for internal or external thread cutting.

4. North American Fire Hose Coupler Incompatibilities - Wikipedia

   en.wikipedia.org/wiki/North_American_Fire_Hose...

   After his death, a paper by Mr. Briggs containing detailed information regarding American Pipe and Pipe-Thread practice was read before the Institution of Civil Engineers of Great Britain. 1886 ASME adopts Briggs pipe thread as the U.S. standard. [19] 1890 Possibly the first garden hose spray nozzle manufactured by W. D. Allen Mfg. Co of ...

5. Threaded pipe - Wikipedia

   en.wikipedia.org/wiki/Threaded_pipe

   Therefore many municipal plumbing codes restrict the use of threaded plastic pipe fittings. Both British standard and National pipe thread standards specify a thread taper of 1:16; the change in diameter is one sixteenth the distance travelled along the thread. The nominal diameter is achieved some small distance (the "gauge length") from the ...

6. Threading (manufacturing) - Wikipedia

   en.wikipedia.org/wiki/Threading_(manufacturing)

   In manufacturing, threading is the process of creating a screw thread.More screw threads are produced each year than any other machine element. [1] There are many methods of generating threads, including subtractive methods (many kinds of thread cutting and grinding, as detailed below); deformative or transformative methods (rolling and forming; molding and casting); additive methods (such as ...

7. Nancy Pelosi undergoes hip replacement surgery after fall in ...

   www.aol.com/news/nancy-pelosi-hospitalized...

   Democratic Rep. Nancy Pelosi, 84, underwent a successful hip replacement surgery after falling while in Luxembourg with a congressional delegation, her office said Saturday. "Earlier this morning ...