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2. Threaded insert - Wikipedia

   en.wikipedia.org/wiki/Threaded_insert

   TIME-SERT insert. A threaded insert, also known as a threaded bushing, is a fastener element that is inserted into an object to add a threaded hole. [1] They may be used to repair a stripped threaded hole, provide a durable threaded hole in a soft material, place a thread on a material too thin to accept it, mold or cast threads into a work piece thereby eliminating a machining operation, or ...

3. Trapezoidal thread form - Wikipedia

   en.wikipedia.org/wiki/Trapezoidal_thread_form

   The original trapezoidal thread form, and still probably the one most commonly encountered worldwide, with a 29° thread angle, is the Acme thread form (/ ˈ æ k m iː / AK-mee). The Acme thread was developed in 1894 as a profile well suited to power screws that has various advantages over the square thread , [ note 1 ] which had been the form ...

4. Double tee - Wikipedia

   en.wikipedia.org/wiki/Double_tee

   Double tees are connected during the construction without topping with concrete to create the parking structure floor surface. [6] A benefit of pre-topped double tees is a higher quality concrete for more durable surface to reduce traffic wears. Factories can produce the topping with minimum concrete strength of 5,000 psi. In some areas, the ...

5. Continuous casting - Wikipedia

   en.wikipedia.org/wiki/Continuous_casting

   Billet casters cast smaller section sizes, such as below 200 mm square, with lengths up to 12 m long. Cast speeds can reach up to 4 m/minute. Rounds: either 500 mm or 140 mm in diameter; Conventional beam blanks: look similar to I-beams in cross-section; 1048×450 mm or 438×381 mm overall; Near net shape beam blanks: 850×250 mm overall

6. TNC connector - Wikipedia

   en.wikipedia.org/wiki/TNC_connector

   The TNC connector features a 7/16"-28 thread, [4] not to be confused with a 7/16 DIN connector, which is the diameter of the mating surfaces as specified in millimeters. Variations [ edit ]

7. Barrel threads - Wikipedia

   en.wikipedia.org/wiki/Barrel_threads

   For example, factory and aftermarket receivers using the Remington 700 footprint are produced with various types of action threads, all with a 26.99 mm (1 + 1 ⁄ 16 in) diameter, but with a pitch of either a 1.588 mm (16 TPI, Remington standard), 1.411 mm (18 TPI) or 1.270 mm (20 TPI, Savage standard).