pipe thread mental mixups

[electryc_monk]

Okay over the years I have always hunted for ways to keep systems, patterns, tables, in a form of reference for easy reading/research etc....

well, I've yet to find via google searches in forums, and admittedly only a weak search in wiki world....

a templet for knowing specifically JIC versus AN or NPT versus "compression" or straight thread versus the pink panther... you get what I mean?

the hydraforces use straight thread

I want to find a simple way to always keep NPT, JIC, AN, and straight threads apart either in a simple sheet or a few pictures for my eyes and anyone elses on a simple word doc etc.


Where this frustration is attached to is the hydraforce solenoids use str thread

the straight,45* and 90* JIC fittings that screw into the heads of the engine have allowed me to come up with any idea to modify the frybrid setup and shorten fuel lines and (admittedly to my preferences) tidy up the engine bays fuel lines a weee bit. Unfortunately I can't seem to find a "TEE" with JIC males on the cross and a JIC female on the stub at 3/8".

there are a pair of other pieces I'd like to find too...
JIC 3/8 to hose barb'd looking stuff or a second "TEE" for this as well????

welp. gotta goto bed....

[WD8CDH]

Summit Racing Part number AER-FBM2282 looks like what you need for the TEE.

AER-FBM1512 or SUM-220701 for the JIC to 3/8" hose barb. There are others in the series if you want a 45 or 90 degree hose barb.

SUM-220751 for a -6AN to 1/4" hose barb.

Those parts and a few others are under the hood of my MB.

[skyskijason]

You need a good fittings store/hose shop. The first time I went in a 10k sq ft building full of millions of fittings I almost lost my mind. That and some patient, creative counter guys - and well, just don't let the wife find out what ya spent!!

I used this stuff for all my under-hood plumbing: PTFE-lined SS braided w/JIC ends - one hose has NPT end for easy connection to FPHE (which is not in this pic)

[siebertluke]

I've gone to vulcan performance for my wierd fitting supplies.

http://www.vulcanperformance.com/

[cgoodwin]

You an get a free wall chart here

NPT (National Pipe Taper) is a tapered thread and is based on the internal size of an old pipe, so a 1/2" NPT fitting will have an ID close to 1/2" but the outside of the male thread will be much larger making things confusing.

AN (Army/Navy) describes the OD of tubing in 1/16" increments so an 06 AN fitting is for 3/8" hose or tube. AN fittings have a 37 degree flare which is identical to JIC ...... BUT there si a difference, Aircraft AN fittings are manufactured to MIL-F-5509 per AN (Air Force - Navy Aeronautical Standard) and AND (Air Force - Navy Aeronautical Design Standard).

Industrial 37 degree flare fittings are manufactured to meet SAE J514/ISO-8434-2. Straight threads are per MIL-S-8879C now SAE-AS8879.

The most notable difference between these standards are in the threads. AN fittings use a increased root radius thread ("J" thread) and a tighter tolerance (Class 3) to achieve a 40% increase in fatigue strength and 10% increase in shear strength (thread tensile stress area of 110.76 compared to 103.20 mm2 ). This difference is stated in the thread designation, For example:

AN Fitting: 1/2-20 UNJF-3B
Industrial: 1/2-20 UNF-2B

These two fittings function the same, they look the same, AND the industrial version is much less expensive to manufacturer. The problem is that the industrial version is 40% weaker.

JIC fittings are made to SAE J514 (MIL-F-18866)are a type of flare fitting having 37-degree flare seating surfaces and are widely used in hydraulic applications. JIC fittings are similar in size and threading to AN fittings. 45-degree flare SAE fittings are similar in thread, but not angle and are not interchangeable.

SAE fittings re similar to both JIC and AN but have a 45 degree flare.

ORB fittings (O-ring Boss) have a straight thread (SAE J514) but seal on an o-ring allowing a positive seal in any position, same threads as JIC but do not have the taper, instead the mating surface has a tapered relief for the O-ring.

Here is a guide to SAE and ORB

JIC, AN, SAE, ORB and some metric fittings will all screw together -they just will nto always do it well. For instance a 14mm ORB fitting will screw into a 06 SEA and it may seal depending on the face of the orifice....

Hydraforce uses whatever you tell them you want, JIC, SAE, AN, ORB you name it. I order my valve bodies in 06 ORB becasue I know where to get a 3/8" hose barb to 06 ORB fitting in a 90 that is also a NWO or Nut With O-ring whihc allows the hose barb to be positioned at any point in a rotation of 360 degrees with only one fitting.

Is your head spinning yet?

[electryc_monk]

Originally Posted by cgoodwin

You an get a free wall chart here

<<snipped a bit for now>>

Hydraforce uses whatever you tell them you want, JIC, SAE, AN, ORB you name it. I order my valve bodies in 06 ORB becasue I know where to get a 3/8" hose barb to 06 ORB fitting in a 90 that is also a NWO or Nut With O-ring whihc allows the hose barb to be positioned at any point in a rotation of 360 degrees with only one fitting.

Is your head spinning yet?

emailed for one (thanks) :>)

will upload a picture soon to show what I'm gonna make it look like...

and Nope, CG I'm not spinning...yet. But hey I'm not afraid of the swirling vortex of knowledge.... (smirks) thanks for such a detailed reply.

[cgoodwin]

The whole fitting JIC, AN, SAE, etc drives me nuts, one fitting in particular, the 12mm 1.0 ORB costs $14, I discovered that the SAE 06 fits right in and at the pressures I am dealing with is just fine, it cost $0.56

Forged or cast fittings are half the cost of machined ones.

[electryc_monk]

I totally understand and probably will come up quite short (on a scale) if comparing my humble level of frustration with yours. (sheepish grin)


Its truly facinating when comparing the mil-spec variations you've gracious listed. My personal navy exp. And dad's 25 odd yrs exp. That I get to say as "experiential knowledge" based on his detailed account of nomenclature fiasco's, SNAFU's, and the truly count-less "they went that-aways"(crossing arms as you point fingers in opposite directions) with regard to a fitting or hose fitting having a seperate mil-spec number for each branch of service!

/tangent
BTW CG is there another mod I can email about uploading pictures to- given your well know overloaded schedule? If one of those is cool with a pm... I don't want to hyjack this thread for your time over this lil issue as I'm assuming this is a ID10T error of mine.
/end tangent

[electryc_monk]

okay this is wierd.. I tried to edit my edit one last time and now the admin has to give me permission to edit it? (blink blink)well i move my tangent to its own thread.... so if any mod wants to edit out the tangent above and say that its got its own thread now fine by me.(shrugs sorry to make work for others.

[cgoodwin]

Years ago I set the edit time to allow people to correct spelling issues but not to edit the posts after a few minutes. This was becasue people would start involved arguements and after they had gone on for several pages and inflamed others with the original post, they would go back and edit the inflammatory post to make themselves look a saint. You write it, here it stays.

Back on subject please.