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SKU: LTN12
3/16" (3/8-24 Inverted) Steel Tube Nuts
Get 10 steel tube nuts with a tube diameter of 3/16" and a thread diameter of (3/8-24 Inverted), (LTN12) precisely measured to ensure easy installation and a secure fit. Their sturdy construction and corrosion-resisting plating make these brake line fittings a lifelong purchase, along with our guaranteed lifetime support.
Versatile and Built with Precision
The versatility of our brake nuts makes them an excellent choice when your other components are made of varying materials. They work with steel, copper-nickel, copper-coated steel, PVF-coated steel, and stainless steel lines. Plus, with 10 included, this is a set of fittings you can confidently rely on even if you'll be working on systems made of varying materials. Whether it's one ride or two and whatever the materials, this set of brake line fittings is just as great on any of them.
Durability You Can Rely On
These brake line tube nuts are plated for protection against rust, adding to their lifetime value and the length of time you can use them before replacement. Their plating ensures that they'll remain in mint condition during storage while you prepare for installation, or after use as you drive in moisture-filled terrains. What's more, these tube nuts and all 4Lifetimelines products come with a lifetime guarantee, giving you peace of mind in the quality of your purchase and our commitment to handling any issues that may arise.
Always Available Support
All 4Lifetime brake pipe connectors give you access to a team that can help with any urgent issues you might experience, whether in the garage or on the road. Our customer service team is always reachable through email, phone, social media or mail — whichever is most convenient for you.
No matter how much time has passed since you bought from us, our team honors the lifetime guarantee that inspires our name and will happily help you.

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Therese parts , and others recently purchased are excellent.
I'm using many 3/16 th parts including their copper nickel tubing full brake system plumbing for 2 high end Street Rods , one in mine the other a friend.
The Threads are very well made and clean, no ruff edges , burrs etc, which has cotton to be the Norm in most auto parts ,,,, IE crap quality
So far this company has provided excelled parts.
Double flaring high pressure automotive brake lines is though enough, quality parts are necessary.
Every single flair so far has Not leaked and we didn't need to cut off a leaky flare, reflate and use another Inverted Nut.
Thanks. Nice to see quality parts and I now prefer the Copper Nickel DOT approved tubing over stainless steel, which is inherently difficult with the best of parts
Plain steel Rusts ,, so that not acceptable
Thanks
Michael retired Engineer
Have not received the Shipment. How am I to do the review