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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. Drill bushing - Wikipedia

   en.wikipedia.org/wiki/Drill_bushing

   A drill bushing, also known as a jig bushing, [1] is a tool used in metalworking jigs to guide cutting tools, most commonly drill bits. Other tools that are commonly used in a drill bushing include counterbores , countersinks , and reamers .

4. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   A double-tapped bushing, commonly shortened to bushing, is a fitting which serves as a reducer. It is a sleeve similar to a close nipple, but is threaded on both its inner and outer circumferences. Like a reducer, a double-tapped bushing has two threads of different sizes.

5. National pipe thread - Wikipedia

   en.wikipedia.org/wiki/National_pipe_thread

   The half-angle (between the taper surface and the axis of the pipe) is arctan(1 ⁄ 32) ≈ 1.7899° ≈ 1° 47′. The standard for Nominal Pipe Size (often abbreviated NPS, which should not be confused with the abbreviation NPS for the straight thread form standard) is loosely related to the inside diameter of Schedule 40 series of sizes.

6. Bushing (electrical) - Wikipedia

   en.wikipedia.org/wiki/Bushing_(electrical)

   In electric power, a bushing is a hollow electrical insulator that allows an electrical conductor to pass safely through a conducting barrier such as the case of a transformer or circuit breaker without making electrical contact with it. Bushings are typically made from porcelain, though other insulating materials are also used.

7. Bearing pressure - Wikipedia

   en.wikipedia.org/wiki/Bearing_pressure

   k 1 and α are factors that take into account other failure modes than the bearing pressure overload; k 1 take into account the effects that are perpendicular to the tangent force, and α the effects along the force; k 1 = min{2.8e 2 /d 0 ; 2.5} for end bolts, k 1 = min{1.4p 2 /d 0 ; 2.5} for inner bolts,