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The Stop Shop Inverted Flare Steel Tube Nuts For 3/8 Inch Tube, 5/8'-18 Threads (Pack of 4)

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$6.99

$ 2 .99 $2.99

In Stock

1.ItemPackageQuantity:12


About this item

  • Inverted Flare Steel Tube Nuts For 3/8 Inch Tube, 5/8"-18 Threads
  • Pack of 4
  • Plated for corrosion resistance
  • Most common SAE inverted flare sizes for 3/8" O.D. tube



Product Description

Product Variety

Classic Car Parts - Tubing - Hardware

  • Pre-bent Brake Lines
  • Copper Nickel Brake/Fuel
  • Stainless Steel Brake/Fuel
  • Nylon Fuel Hose
  • Brake Line Hardware
Since we got started in 2015, we have helped thousands of customers get the hard to find parts.

Our experts are here to help!

Pre-bent brake lines

Pre-bent Brake Lines available!! Just pop out your old lines and put these new beauties in place!

- CNC bent exact reproduction brake lines. Simply remove all original rusty lines and put the new tubes in place!

- Made from 304 Stainless tubing. Tube nuts are made from steel plated for corrosion resistance. Fittings and tube size will match factory tubes.

- Spring guard to protect tube will be in factory positions (if factory tubes had spring guard)

Pre-bent or Do It Yourself we have what you need to get the job done right!

Copper Nickel Brake Line Tubing

Copper Nickel

Copper Nickel tubing will never rust! This tubing has a wall thickness of .028".

Copper Nickel also bends and flares extremely easily!! If you have a brake line that needs bent by hand this is absolutely the way to go!

Stainless Steel Tubing, Stainless Gravel Guard and Stainless Fittings

Stainless Steel

Stainless steel looks great and will never rust!

Stainless isn't just a great look it's also a great performance product. Unlike Copper Nickel, it does require a higher end flaring tool.

Nylon Fuel Hose

Nylon Fuel Hose

Our Nylon Fuel Line repair kits are an effective and economical way to repair rusted steel fuel lines or damaged nylon tubes.

This nylon tube can be connected directly to original steel tubes on vehicles.

Brake Line Hardware

Brake Line Hardware

We have a large variety of brake and fuel line hardware for both inverted and bubble flare needs.

Whether it's tube nuts, clips, tees, unions, adaptors, banjo bolts, washers, gravel guard, etc. we have you covered!


Mike S.
July 16, 2025
Upon first inspection these fittings have weight to them. Looks to be machined well. Screws in with ease but no looseness in the threads. Quality product. Great price.
Dan C
June 19, 2025
Fits my transmission and trany-cooler for my 3/8" diameter line connections.
Quinn
June 15, 2025
So far used about ten of these tube nuts. They are quality pieces that don’t leak and so far I haven’t rounded any of them over. They feel like quality items when you hold them in your hand.
Peter Deering
June 14, 2025
Nice , fast delivery
mcff
June 12, 2025
Got to have spares if you are working on brake lines or fuel lines.
curt
May 22, 2025
fit very well
Tyler
April 14, 2025
Used with 3/8 NiCopp tubing to make oil lines for an old motorcycle. Works perfectly.
DrDoug
February 28, 2025
Very nice fit & finish.
Customer
February 9, 2025
A little expensive