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Tube Nuts

Brake Line Tube Nuts – Secure, Reliable, and Easy to Install

Shop 4Lifetime’s wide selection of tube nuts for brake and fuel lines, available in 3/16", 1/4", 5/16", and 3/8" sizes. Find the right fit fast, with quality you can trust. Need help?  Visit our Knowledge Garage for expert tips on selecting and installing fittings.

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$48

Showing 1 — 16 of 48 Products
Showing 1 — 16 of 48 Products
3/16" (3/8-24 Inverted) | Tube Nut | Stainless Steel | 10ct - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
4 Reviews
3/16" (3/8-24 Inverted) | Tube Nut | Stainless Steel | 10ct
$9.99
3/16" ( 3/8-24 Inverted) | Steel Tube Nut | 10ct - 4LifetimeLines
Brake Line Fittings
3.0
Rated 3.0 out of 5 stars
2 Reviews
3/16" (3/8-24 Inverted) | Steel Tube Nut | 10ct
$7.99
3/16" Metric 10x1.0 Bubble | Steel Tube Nut | 10ct - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
1 Review
3/16" Metric 10x1.0 Bubble | Steel Tube Nut | 10ct
$8.99
$7.99
3/16" (M10x1.0 Inverted) | Tube Nut | Stainless Steel | 10ct - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
2 Reviews
3/16" (M10x1.0 Inverted) Stainless Steel Tube Nut | 10ct
$11.99
3/16" (M10x1.0 Bubble) | Tube Nut | Stainless Steel | 10ct - 4LifetimeLines
Brake Line Fittings
4.8
Rated 4.8 out of 5 stars
5 Reviews
3/16" (M10x1.0 Bubble) Stainless Steel Tube Nuts | 10ct
$10.99
3/8" (5/8-18 Inverted) | Steel Tube Nut | 10ct - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
1 Review
3/16" (M10x1.0 Inverted) Steel Tube Nut | 10ct
$9.99
3/8" (5/8-18 Inverted) | Steel Tube Nut | 10ct - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
2 Reviews
1/4" (7/16-24 Inverted) Steel Tube Nut | 10ct
$6.99
1/4" (1/2-20 Inverted) | Steel Tube Nut | 10ct - 4LifetimeLines
5.0
Rated 5.0 out of 5 stars
1 Review
1/4" (1/2-20 Inverted) | Steel Tube Nut | 10ct
$9.99
$7.99
3/16" (3/8-24 Inverted) | Stainless Steel Brake Line Tube Nut | Long | 10ct - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
2 Reviews
3/16" (3/8-24 Inverted) | Stainless Steel Brake Line Tube Nut | Long | 10ct
$10.99
1/4" (7/16-24 Inverted), Long | Steel Tube Nut | 10pk - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
1 Review
1/4" (7/16-24 Inverted), Long Steel Tube Nut | 10pk
$6.99
3/16" (M12x1.0 Bubble) | Tube Nut | Stainless Steel | 10ct - 4LifetimeLines
Brake Line Fittings
4.7
Rated 4.7 out of 5 stars
3 Reviews
3/16" (M12x1.0 Bubble) Stainless Steel Tube Nut | 10ct
$12.99
4LIFETIMELINES Brake Line Tube Nut - 3/16 (3/8-24 Inverted), Black Oxide Coated Steel, Bag of 10 - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
2 Reviews
Brake Line Tube Nut | 3/16" (3/8-24 Inverted) | Black Oxide Coated Steel | 10ct
$7.99
3/16" (3/8-24 B) | Tube Nut | 10ct - 4LifetimeLines
Brake Line Fittings
5.0
Rated 5.0 out of 5 stars
1 Review
3/16" (3/8-24 B) Tube Nut | 10ct
$7.99
$9.99