Anyone have list of flare nut sizes? - Chevy Impala SS Forum
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post #1 of 6 (permalink) Old 05-23-2019, 11:46 AM Thread Starter
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Anyone have list of flare nut sizes?

Hey guys, building all new brake lines for my 96 SS out of NICOPP tubing (ABS delete, LS swap, looking to route things a little differently and wasn't worth rebending preexisting line).

I've got all the lines bent up and ready to be flared with my eastwood flaring tool (yes, can do ISO bubble).

Just wondering if someone had a list of what size flare nuts are used for the master, proportioning valve and calipers? I'm looking to order stainless flare nuts but have no idea what sizes I need. hoping someone could save me a lot of trouble if there is a list floating out there somewhere that can be reposted.

96 BBB Pro Touring- In the works- Mods list includes functional money incinerator, should have stuck to bolt-ons button, 100 dollars in mild steel MIG wire, a really expensive air compressor and a letter from Tire Rack saying nobody makes 335/35/17's anymore. (396/AI heads/D1SC)
https://www.impalassforum.com/vBullet...formance+build --frame off build up thread
Old N/A setup http://www.youtube.com/watch?v=3ZvPZi9fL8k 396, LE2 heads, TH400

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post #2 of 6 (permalink) Old 05-23-2019, 11:55 AM
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Many different threads sizes for even same size line. Found it easiest to use the fittings that came off,slide them on the new line,and install in the ports where fitting came from originally.

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post #3 of 6 (permalink) Old 05-23-2019, 12:11 PM Thread Starter
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Quote:
Originally Posted by 1slow96 View Post
Many different threads sizes for even same size line. Found it easiest to use the fittings that came off,slide them on the new line,and install in the ports where fitting came from originally.

I wish I had them! LOL all my old brake lines have been long gone, probably threw them out at some point shortly after I took the frame off the body in like 2008. Been a nightmare putting this car back together because over the years I have had to make room and threw out so many of the the old parts on the car that I figured I wouldn't use again. Doh!

I might try calling inline tube and seeing if they could supply me with correct flare nut sizes to purchase from them being that they make prebent kits so they must know. If I get an answer I'll post it here in case anyone needs it in the future.
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96 BBB Pro Touring- In the works- Mods list includes functional money incinerator, should have stuck to bolt-ons button, 100 dollars in mild steel MIG wire, a really expensive air compressor and a letter from Tire Rack saying nobody makes 335/35/17's anymore. (396/AI heads/D1SC)
https://www.impalassforum.com/vBullet...formance+build --frame off build up thread
Old N/A setup http://www.youtube.com/watch?v=3ZvPZi9fL8k 396, LE2 heads, TH400
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post #4 of 6 (permalink) Old 05-23-2019, 12:22 PM Thread Starter
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I will actually only need the caliper end flare nuts for front calipers and bottom of the proportioning valve flare nuts. I dug up the master to proportions valve lines (still attached to my old master) so at least I can knock those 4 off the list.

96 BBB Pro Touring- In the works- Mods list includes functional money incinerator, should have stuck to bolt-ons button, 100 dollars in mild steel MIG wire, a really expensive air compressor and a letter from Tire Rack saying nobody makes 335/35/17's anymore. (396/AI heads/D1SC)
https://www.impalassforum.com/vBullet...formance+build --frame off build up thread
Old N/A setup http://www.youtube.com/watch?v=3ZvPZi9fL8k 396, LE2 heads, TH400
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post #5 of 6 (permalink) Old 05-23-2019, 06:35 PM
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hope this helps.
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post #6 of 6 (permalink) Old 05-23-2019, 07:19 PM
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Book shows the rear brake line broken down as follows

Nuts M12-1 fits 6.35 mm tube (1/4) 10156993


Welcome to metric brake line hell I have been through this with both my 2002 LeSabre (which required every piece of brake line except the hoses to the wheels replaced) and my Caprice. If you touch enough of the fittings, you will find some of each of the following sizes:
M12x1.0mm
M12x1.5mm
M10x1.0mm
M10x1.25mm


https://www.impalassforum.com/vBulle...d-lines-2.html

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