The Best Union Tube Nuts

Looking for the best Union Tube Nuts?

Discover now our comparison of the best Union Tube Nuts. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Union Tube Nuts are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Union Tube Nuts in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1

Sherco-Auto 158 Piece Brass Union Tube Nut Brake & Fuel Line Fitting Assortment Kit - 25 Types

No. 2

Frienda 12 Pieces 3/8 Inch-24 Threads Brake Line Fittings Assortment for 3/16 Inch Tube (4 Unions, 8 Nuts)

Fit for: the unions measures approx. 0.6 x 0.9 inch, the nut measures approx. 0.67 x 3/8 inch, fit for most common inverted flare or double flare sizes for 3/16 inch tube, for use with 3/16 inch steel, poly coated or copper brake lines; Please confirm the size of the details according to the picture before purchasing
Size and material: both the unions and nuts are metric 3/8-24 threads (regular 3/16 inch tube fitting size), all brake line fittings are made of quality brass to prevent rust and plated for corrosion resistance
You will get: 12 pieces brake line fittings in the package, include 4 pieces unions and 8 pieces nuts, you can share them with your family and friends, these tubes unions are good fittings
Inverted flare union: these unions are a nice option to join 2 (3/16 inch) brake lines together
Brake line fitting connect: the nut is called the fitting for 3/16 inch tube, these unions fittings have a hex size of 3/8 inch and the threads are 3/8 inch with a thread pitch of 24

SaleNo. 3

MuHize 1/4 Brake Line Fittings - Upgraded 15 Pieces 7/16 24 Threads Brake Union Fittings Assortment for 1/4” Brake Tube (5 Unions, 10 Nuts)

PACKAGE INCLUDE - MuHize upgraded Brake Line Fittings Replacement (Pack of 15): ① 5 x metric 7/16-24 threads unions; ② 10 x metric 7/16-24 threads nuts; Note：Both the unions and nuts is metric 7/16-24 threads (regular 1/4 inch tube fitting size). Please check before shopping!
INVERTED FLARE UNION- Any 2 (1/4 inch) brake lines can be easy to joined with Muhize unions. both the sizes for unions and nuts are both 7/16-24 threads, which is the regular fitting size for 1/4 inch tube.
HIGHER QUALITY - MuHize brake line fittings are made of durable brass with unique rust corrosion proofing technology.
WIDELY APPLICATION - MuHize 7/16-24 threads brake fittings commonly fits for regular inverted flare/ double flare sizes for 1/4 inch brake lines tube.
PROFESSIONAL - MuHize focus on outstanding features and benefits of braking line. 100% brand new & made from excellent materials, and good contact.

No. 4

MuHize 3/16 Brake Line Fittings - Upgraded 15 Pieces 3/8'-24 Threads Assortment Fitting for 3/16 Inch Brake Line Tube (5 Unions, 10 Nuts)

PACKAGE INCLUDE - MuHize upgraded Brake Line Fittings Replacement (Pack of 15): ① 5 x 3/8-24 threads unions; ② 10 x 3/8-24 threads nuts. Note：Both the unions and nuts are 3/8-24 threads (regular 3/16 inch tube fitting size). Please check before shopping!
INVERTED FLARE UNION- Any 2 (3/16 inch) brake lines can be easy to joined with Muhize unions. both the sizes for unions and nuts are both 3/8-24 threads, which is the regular fitting size for 3/16 inch tube.
HIGHER QUALITY - MuHize brake line fittings are made of durable brass with unique rust corrosion proofing technology.
WIDELY APPLICATION - MuHize 3/8' - 24 threads fittings commonly fits for regular inverted flare/ double flare sizes for 3/16 inch brake lines tube.
PROFESSIONAL - MuHize focus on outstanding features and benefits of braking line. 100% brand new & made from excellent materials, and good contact.

No. 5

Brake Line Fittings Assortment for 3/16" Tube, Pack of 15 (5 Long Nuts, 5 Short Nuts, 5 Unions) 3/8-24 Threads

【Size Specification】- Include 5 x 3/16" short tube nuts, 5 x 3/16" long tube nuts, 5 x 3/16" unions, both the unions and nuts are metric 3/8" - 24 threads.
【Superior Material】- These fittings are made of high-strength steel, and the surface is coated with anti-corrosion.
【SAE Standard】- For SAE inverted flares and double flare size on 3/16".
【Precautions】- The union is made of pure copper and has high strength. Please pay attention to the size and specifications of the union to prevent damage from destructive forces.
【Lifetime Warranty】- You can return or exchange the fittings at any time, if you have any questions, please contact us and you will have a satisfactory reply, we look forward to your suggestions.

No. 6

12pcs Brass Inverted Flare Brake Line Fittings Assortment - 3/8 Inch, 24 Threads, 4 Unions, 8 Nuts for 3/16' Brake Line Tube

【HIGHER QUALITY】 brake fittings are made of durable brass with unique rust corrosion proofing technology. Prevent rust and plated for corrosion resistance
【SCOPE OF APPLICATION】The unions measures approx. 0.6 x 0.9 inch, the nut measures approx. 0.67 x 3/8 inch, the unions measures Approx. 0.6 x 0.9 inch, the nut measures Approx. 0.67 x 3/8 Inch, fit for most common inverted flare or double flare sizes for 3/16 inch tube, for use with 3/16 inch steel, poly coated or copper brake lines; If you have any questions, please feel free to contact us.
【SIZE】Both the unions and nuts are metric 3/8-24 threads (regular 3/16 inch tube fitting size),Please confirm the size of the details according to the picture before purchasing.
【THE PACKAGE INCLUDES】12 pieces brake line fittings in the package. include 4 pieces unions and 8 pieces nuts, you can share them with your family and friends, these tubes unions are good fittings. I'm sure they'll like it.
【BRAKE LINE FITTING CONNECT】the nut is called the fitting for 3/16 inch tube, these unions fittings have a hex size of 3/8 inch and the threads are 3/8 inch with a thread pitch of 24. Please check before shopping!

No. 7

4LIFETIMELINES - Fitting Assortment Kit 1/4" Tube Nut, Union, Adapter; Brake System Line Repair, 8 Popular SKUs, Shatterproof Tackle Box, 16 Tube Nuts, 6 Adapters, 4 Unions

Comprehensive Brake Line Fitting Collection: This kit features 8 essential SKUs of 1/4" brake line fittings, a must-have for automotive hydraulic brake system maintenance and repairs.
Ideal for Repair Shops: Designed for both specialty and general repair shops, these assortments ensure you have the right brake line fittings readily available when dealing with hydraulic braking systems.
Convenient Packaging: Our assortments come in shatter-resistant, see-through plastic trays for easy organization. Locator labels inside the lid simplify the process of finding, selecting, and replenishing brake fittings.
Material Compatibility: These fittings are compatible with a range of brake line materials, including steel, copper nickel, copper-coated steel, PVF-coated, and stainless steel brake lines.
Lifetime Warranty: Enjoy peace of mind with our lifetime warranty, provided with all products purchased from 4Lifetimelines. Your investment is backed by our commitment to quality.

No. 8

1/4 Brake Line Pressure Fittings, 12 Pieces 7/16 Inch-24 Threads Brass Brake Line Fitting Assortment for 1/4 Inch Brake Line Tube (4 Unions, 8 Nuts)

High Quality Material: Brake line fitting is made of high quality brass with anti-rust and anti-corrosion technology, ductile at high temperatures and low magnetic properties. Brake pipe fitting bubbles are strong and reliable for long term use
Package and Size: Package contains 12 brake line couplers, including 4 fittings and 8 nuts, the fittings and nuts are 7/16-24 threads (regular 1/4 inch pipe fitting size). Please confirm the size details according to the picture before purchase
Inverted and Double Flared Union: Any 2 (1/4-inch) brake lines can be easily connected to brake line adapter fittings for common inverted flare and double flare sizes for 1/4-inch steel, poly-coated or copper brake lines
Easy to Install: First clean the surface of the brake pipe, then put nuts on each end of the two brake lines, and finally connect the two nuts with the brake line union connector fitting, and tighten it with a wrench to fix it
Widely Compatible: 7/16-24 threaded brake fittings typically fit all common inverted flare/double flare sizes of 1/4-inch brake line tubing. These 1/4-inch brake line unions are great accessories to share with your family and friends

No. 9

24 PCS 3/16" Brake Line Fittings Kit - 24 Threads Assortment for 3/16" Tube - Includes 8 PCS Unions, 16 PCS Nuts

Application: This Brake Line Fittings Assortment is suitable for inverted bellmouth on 3/16 inch and 1/4 inch Tube. Note: The nut threads are regular tube fitting size. Please confirm the size of the details according to the picture before purchasing.
Fit for 3/16” Brake Line: The unions measures approx. 0.54 x 0.62 inch; The nut measures approx. 0.6 x 3/8 inch. Both the unions and nuts are metric 3/8-24 threads (regular 3/16 inch tube fitting size).
High Quality: Brake line unions are made of high quality brass, ductile at high temperature and has low magnetic attraction. Brake pipe nut is made of high strength steel, and its surface is coated with anti-corrosion layer.These brake line union are good fittings to share with your family and friends.
Package Include: Provide multiple Brake Line Fittings Kits quantity options: 12 pcs include 8 pcs pipe brake line nuts and 4 pcs brake unions; 24 pcs include 16 pcs pipe brake line nuts and 8 pcs brake unions; 42 pcs include 28 pcs pipe brake line nuts and 14 pcs brake unions;
Professional: ChillerK focus on outstanding features and benefits of braking line. 100% brand new & made from excellent materials, and good contact. Our brake line accessory series is widely compatible with various vehicle models, including trucks, sedans, SUVs, and motorcycles.

No. 10

2" Spa Hot Tub Heater Split Nut Union amp with Screw, 2 pcs Heater Gasket/O-Rings Replacement for Balboa Gecko (Actual Size 3 Inch,Suitable for 2 Inch Heater Assemblies) - 2 Packs

【Include】: 2 x 2" Heater Split Nuts, (4) Screws and (2) Gaskets for use with a 2" Heater Tube & Union.
【Size】 : Split Nut Measurement：The inner size is 2.3 inch, the outer size is 2.9 inch, Actual Oring Measurement：The inner size is 2.08 inch, the outer size is 2.87 inch, Fits 2" Heater Tube & Union.
【Compatible Models】: O-ring fits for Balboa, Gecko, HydroQuip, Spa Builders, Correctech, Spanet, Fits Most 15" Spa Heaters.
【Note】 : Not suitable for Coleman Saluspa this Split Nut, Not fits LX Heater, NOT for Inflatable Hot Tubs.
【Easy to Install】 : The Heater Flange Split Nut mounts to the heater tube using 2 screws to hold it in place and screws onto the heater threaded union with a gasket between the union and tube.

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Last update on 2025-06-02 / Affiliate links / Images from Amazon Product Advertising API

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