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thread tap for straight -an fittings

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Old 01-24-2008, 11:27 PM
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Default thread tap for straight -an fittings

Looking for a tap for my home made fuel rails. I want to put -8an straight o-ring fittings in the ends, where can I find a tap? Rails have a 11/16" I.D.
I already looked at grainger and mcmaster, no luck though maybe I missed it.


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Old 01-25-2008, 10:16 AM
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Look again, I just went through this myself 2-3 month's ago. They will not say anything about AN on the listing.
They will be listed as size & thread. My crew chief is at work, if you can't find, I will call & find where he got ours.
I thought he said mcmaster??

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Old 01-25-2008, 11:08 AM
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Issue also will be getting a good machined edge of proper diameter for the 0-rings to seal properly

why not tap to a NPT thread and use a NPT to -8AN adapter
Old 01-25-2008, 12:05 PM
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http://www.discounthydraulichose.com/category_s/55.htm

J514 37° or straight thread have the tap sizes.

They do make ORB port cutters to deal with the o-ring sealing surface. But for the average garage racer, NPTF is the easier way to go
Old 01-25-2008, 04:25 PM
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Issue also will be getting a good machined edge of proper diameter for the 0-rings to seal properly

why not tap to a NPT thread and use a NPT to -8AN adapter
This is going to my secondary fuel system and I'm fussy. My primary rails are straight an O-ring fittings and I can only notice a 45 degree chamfer on the ends.

http://www.discounthydraulichose.com/category_s/55.htm

J514 37° or straight thread have the tap sizes.

They do make ORB port cutters to deal with the o-ring sealing surface. But for the average garage racer, NPTF is the easier way to go
__________________
3/4-16" Sweet
what's the 2b for? as in 3/4-16" UNF-2b
counterbore tool $500.00 lol wow

Last edited by ls1king000; 01-25-2008 at 05:58 PM.



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