Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings. A complete coupling consists of a plug and a socket both sold separately that connect and disconnect quickly. Use them if you need frequent access to a line. All Schrader plugs are compatible with any of the Schrader sockets of the same coupling size, regardless of the pipe size or barbed hose ID.

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Over the years, we have received quite a few inquiries regarding "AN" fittings. AN fittings are manufactured to meet above standards. They were adopted by Air Corps, a part of the U. Army at that time, as AC and AC The U. AN fittings remain prevalent today. However, the U.

If you have any questions or comments, please post them and we will respond if warranted. Did you find this post helpful? Subscribe to TFD techConnect posts by email. TFD techConnect is a technically-focused monthly blog written for engineers specifically around motion and control engineering challenges. Do you want to receive new product announcements and technology updates from Parker Tube Fittings Division? Subscribe today and stay informed. Additional related content about hydraulic tube, hose, and port fitting connections:.

Have a question about Parker products or services? Blog Home Contact Parker. Wednesday, April 19, by TechConnect Team. Gene Hughes. Excellent article. Recently had to address this in the field. George Dennison. I can understand why industrial 37' fittings should never be used in place of AN 37' fitting, but what about the reverse?

I have a box of AN 37' I was given, automotive fittings , but can purchase industrial 37' fittings at employee pricing from MSC, where my wife works, so there is a big price difference. I have no plans on working on aircraft, nor anything else where aircraft quality is needed. Burleigh Bailey. It is important to note that you should not mix components in the particular assembly — meaning that the nuts and sleeves attached to this fitting need to be AN as well.

This also applies to the material — all components of the fitting assembly should be the same material. Let me know if you have more questions.

Joe Quackenbush. Enjoyed the historical article Must be some engineering involved to select that particular angle. While the 30 degree flare fittings at the time such as the Parker Triple Fittings, not to be confused with the current Parker Triple-Lok fitting tended to be larger, heavier, and used with pipe not tube.

The 37 degree flare angle provided improved working pressures, smaller envelope and simple tube flaring and assembly process. Subscribe to This Team. Manage Email Subscriptions. Parker Support Support. Tweets by Parker. Connect With Us.



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SAE AS4395


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