Technical When Did AN Fittings Come Out

Wonder about the hose too. Exposed stainless braid somewhat modern? All early hose like the Stratoflex stuff?

 

An & ms DO NOT interchange AN female side are flared with a backup sleeve, MS female have a shaped/flare sleeve swedged onto the tube.

 

I like them fine, as they just don't leak and you don't have to reef the crap out of them to get a good seal. I also prefer them un-anodized. Gary

 

Here's an ad on Ebay, supposed to be from 1955.

 

The red & blue are standard anodize and won't pass an electric insulation test. The others are 'hard coated' anodize, those would be gray, black, green I think, anyway those are insulated and will not pass current (a dielectric rating).

 

Stratoflex 1955.

 

According to the Parker site Stratoflex came about around 1950 and here's a bit of history on Aeroquip. Interesting mention in 1955 on how what I guess the modern V-band clamp is and how it came about.
http://www.mlive.com/news/jackson/index.ssf/2010/04/peek_through_time_aeroquip_cor.html

 

The P-51 fighter plane on display at the Chino Air Museum in California has AN fittings that can be seen up in the landing gear area. The plane was built in the early 1940's. It also has dzus fastners holding the cowl on around the engine and heim joints on the cable controls of the tail rudder. Hotrodding expanded in leaps and bounds after WWII using surplus aircraft parts and American ingenuity.