AN thread

AN thread

The AN thread is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid. It is a US military-derived specification stemming from a joint standard agreed upon by the Air Force and Navy, hence AN.

AN sizes range from -2 (dash two) to -32 in irregular steps, with each step equating to the OD (outside diameter) of the tubing in 1/16" increments. Therefore, a -8 AN size would be equal to 1/2" OD tube (8 x 1/16 = 1/2). However, this system does not specify the ID (inside diameter) of the tubing because the tube wall can vary in thickness. Each AN size also uses its own standard thread size.

AN fittings are a flare fitting, using 37° flared tubing to form a metal-metal seal. They are similar to other 37° flared fittings, such as JIC fittings, which is their industrial variant. The two are interchangeable in theory, though this is typically not recommended due to the exacting specifications and demands of the aerospace industry. The differences between them relate to thread class (how tight a fit the threads are) and the metals used.

Note that 37° AN and 45° SAE fittings and tooling are not interchangeable due to the different flaring angles. Mixing them can cause leakage at the flare.

ize comparison

ee also

* Threaded pipe
* National pipe thread
* O-Ring Boss Seal
* Swage
* Flare fitting

External links

* [http://www.aeromotiveinc.com/tb.php?id=68 Aeromotive Inc. Document on AN fittings]

* [http://www.mechanicsupport.com/articleStronger.html Article on difference between AN and JIC]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Thread-local storage — (TLS) is a computer programming method that uses static or global memory local to a thread.This is sometimes needed because all threads in a process share the same address space.In other words, data in a static or global variable is normally… …   Wikipedia

  • Thread-Safety — Saltar a navegación, búsqueda Thread safety (Seguridad en hilos) es un concepto de programación de computadores aplicable en el contexto de los programas multi threaded. Una pieza de código es thread safe si funciona correctamente durante la… …   Wikipedia Español

  • Thread safety — is a computer programming concept applicable in the context of multi threaded programs. A piece of code is thread safe if it functions correctly during simultaneous execution by multiple threads. In particular, it must satisfy the need for… …   Wikipedia

  • Thread (Pern) — Thread is the name of a deadly phenomenon that appears throughout Anne McCaffrey s series of science fiction novels about the fictional planet Pern. Thread are thin silver filaments of a space borne mycorrhizoid spore that devours all organic… …   Wikipedia

  • Thread — (thr[e^]d), n. [OE. threed, [thorn]red, AS. [thorn]r[=ae]d; akin to D. draad, G. draht wire, thread, OHG. dr[=a]t, Icel. [thorn]r[=a][eth]r a thread, Sw. tr[*a]d, Dan. traad, and AS. [thorn]r[=a]wan to twist. See {Throw}, and cf. {Third}.] 1. A… …   The Collaborative International Dictionary of English

  • Thread and thrum — Thread Thread (thr[e^]d), n. [OE. threed, [thorn]red, AS. [thorn]r[=ae]d; akin to D. draad, G. draht wire, thread, OHG. dr[=a]t, Icel. [thorn]r[=a][eth]r a thread, Sw. tr[*a]d, Dan. traad, and AS. [thorn]r[=a]wan to twist. See {Throw}, and cf.… …   The Collaborative International Dictionary of English

  • Thread cell — Thread Thread (thr[e^]d), n. [OE. threed, [thorn]red, AS. [thorn]r[=ae]d; akin to D. draad, G. draht wire, thread, OHG. dr[=a]t, Icel. [thorn]r[=a][eth]r a thread, Sw. tr[*a]d, Dan. traad, and AS. [thorn]r[=a]wan to twist. See {Throw}, and cf.… …   The Collaborative International Dictionary of English

  • Thread herring — Thread Thread (thr[e^]d), n. [OE. threed, [thorn]red, AS. [thorn]r[=ae]d; akin to D. draad, G. draht wire, thread, OHG. dr[=a]t, Icel. [thorn]r[=a][eth]r a thread, Sw. tr[*a]d, Dan. traad, and AS. [thorn]r[=a]wan to twist. See {Throw}, and cf.… …   The Collaborative International Dictionary of English

  • Thread lace — Thread Thread (thr[e^]d), n. [OE. threed, [thorn]red, AS. [thorn]r[=ae]d; akin to D. draad, G. draht wire, thread, OHG. dr[=a]t, Icel. [thorn]r[=a][eth]r a thread, Sw. tr[*a]d, Dan. traad, and AS. [thorn]r[=a]wan to twist. See {Throw}, and cf.… …   The Collaborative International Dictionary of English

  • Thread needle — Thread Thread (thr[e^]d), n. [OE. threed, [thorn]red, AS. [thorn]r[=ae]d; akin to D. draad, G. draht wire, thread, OHG. dr[=a]t, Icel. [thorn]r[=a][eth]r a thread, Sw. tr[*a]d, Dan. traad, and AS. [thorn]r[=a]wan to twist. See {Throw}, and cf.… …   The Collaborative International Dictionary of English

  • thread the needle — Thread Thread (thr[e^]d), n. [OE. threed, [thorn]red, AS. [thorn]r[=ae]d; akin to D. draad, G. draht wire, thread, OHG. dr[=a]t, Icel. [thorn]r[=a][eth]r a thread, Sw. tr[*a]d, Dan. traad, and AS. [thorn]r[=a]wan to twist. See {Throw}, and cf.… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”