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The Best Tube Nuts

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Discover now our comparison of the best 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 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 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.

SaleNo. 1
EVIL ENERGY 6AN Female Hardline Tube Nut & Sleeve Aluminum Fitting for 3/8" OD Alloy Tubing 2PCS
  • Thread Size: The thread size of 6an is 9/16-18 UNF,tube sleeve used to 3/8'' OD stainless steel tube.
  • Material: Made of aluminum alloy 6061-T6, the working temperature range is from -65℉ to 252℉.
  • Function: The nut is used for the conversion of the alloy pipe and the fitting,the sleeve is used to fix the pipe and prevent it from moving, and the sleeve is sealed with a 37 degree and an outer flaring of the pipe.
  • Installation:Need to install the tube nut and sleeve on the tubing first.Then use a 37° flaring tool to flare the end of the coiled aluminum / stainless steel tube.Professional installation recommended.
  • Application: Widely used in engine modification, refueling system, fuel system, brake system, cooling system.
No. 2
Podavelle 3AN Hardline Stainless Steel Tube Nut and Sleeve Fitting for 3/16" OD Tubing, 2 Sets
  • AN3 (3/8-24 UNF) stainless tube nut and sleeve assembly, fits 3/16" outside diameter hardline / tubing
  • Package includes two nuts and two sleeves
  • Manufactured from 304 stainless steel
  • These stainless steel nuts and sleeves allow you to make a 37 degree flare -3 AN connection to the end of a 3/16 inch hard line tubing
  • Notice: your hardline tube end will need to be flared at 37 degrees using a flaring tool
No. 3
MroMax M8x30mm Round Connector Nuts, 304 Stainless Steel Threaded Sleeve Rod Bar Stud Tube Nuts for Camera Pan, Lamp Bracket, Glass Folding Dining Table Silver 5pcs
  • ✅【DIMENSION】- Threaded Size: M8; Total Size: 30mm/1.18 " x 12mm/0.47 "( Height x Outer Dia)
  • ✅【MATERIAL】- These Round Connector Nuts made of 304 stainless steel, Surface Vibration whitening treatment, wear-resisting and durable good rust to use.
  • ✅【ADVANTAGE】- With compact size and easy to use. Ideal for fasten application.
  • ✅【Feature】- Mainly used for frequent adjustment of angles , such as camera pan, lamp bracket, glass folding dining table, etc.
  • ✅【PACKAGE CONTENT】- 5 x Coupling Nuts
No. 4
The Stop Shop Inverted Flare Tube Nut for 3/8" Tube (5/8-18 Threads) (Pack of 12)
  • For 3/8" Tube
  • 5/8-18 Threads (standard 3/8" tube fitting size)
  • Standard Steel
  • Most common SAE inverted flare sizes
  • Plated for corrosion resistance
No. 5
3/8-24 20pc/Set Inline Tube Nuts Finish Gold Zinc Inverted Flare Gold Zinc Fitting 3/16 Brake Line Tubing
  • ★OEM Brake Line Fittings for 3/16" or 4.50 MM Tubing, Thread 3/8-24, Hex Head 3/8", OAL .560, Length of Thread.350
  • ★Finish Gold Zinc
  • ★The most common brake line fitting used. GM9432075
  • ★Equivalent to 105B, 121003, 105X3, 90002, 785-460, BR105
  • ★After-sales guarantee:If the product you receive has any quality problems, please contact us first, and we will solve it for you as soon as possible
No. 6
Nut, 1-3/16x16 TPI, QPQ Finish, Made of Steel
  • Nut, 1-3/16x16 TPI Made of Steel QPQ finish. OD 34.5mm Highth 10mm 2 symmetrical gap for tighten easy.
No. 7
The Stop Shop Inverted Flare Tube Nut for 5/16" Tube (1/2-20 Threads) (Pack of 12)
  • For 5/16" Tube
  • 1/2-20 Threads (standard 5/16" tube fitting size)
  • Standard Steel
  • Most common SAE inverted flare sizes
  • Plated for corrosion resistance
No. 8
4LIFETIMELINES Steel Tube Nut, 3/16 (M10x1.0 Inverted), 10/bag
  • Precise Fit and Multipurpose: Secure 10 steel tube nuts with 3/16" tube diameter and (M10x1.0 Inverted) thread diameter (LTN31), ensuring effortless installation and a snug fit for a variety of applications.
  • Versatile Compatibility: These brake line fittings adapt seamlessly to materials like steel, copper-nickel, copper-coated steel, PVF-coated steel, and stainless steel lines, providing unmatched versatility for your projects.
  • Long-Lasting Durability: Plated to resist rust, our brake line tube nuts maintain their integrity in storage or high-moisture conditions, ensuring prolonged use. Backed by a lifetime guarantee, these fittings exemplify our commitment to quality and customer satisfaction.
  • Always Available Support: With 4Lifetime, you're never alone. Our dedicated customer service team is ready to assist you with any urgent issues, ensuring you're covered in the garage or on the road.
  • Lifetime Assurance: Rest easy knowing that our lifetime guarantee stands the test of time. No matter when you purchased our products, we're here to address any issues that may arise, honoring our commitment to enduring quality and service. Invest in confidence with 4Lifetime brake pipe connectors!
No. 9
EVIL ENERGY 3AN Female Hardline Tube Nut and Sleeve Fitting Stainless Steel for 3/16" OD Alloy Tubing 2PCS
  • Thread Size: The thread size of AN3 is 3/8-24 UNF, tube sleeve used to 3/16" OD stainless steel or aluminum tube.
  • Material: Made of stainless steel 304, the working temperature range is from -68℉ to 1472℉, which can maintain better performance under high temperature conditions.
  • Function: The nut is used for the conversion of the alloy pipe and the fitting,the sleeve is used to fix the pipe and prevent it from moving, and the sleeve is sealed with a 37 degree and an outer flaring of the pipe.
  • Installation: Need to install the tube nut and sleeve on the tubing first.Then use a 37° flaring tool to flare the end of the coiled aluminum / stainless steel tube.Professional installation recommended.
  • Application: Widely used in engine modification, refueling system, fuel system, brake system, cooling system.
No. 10
MECCANIXITY Round Coupling Nut, M4x0.7mm Female Thread 15mm Threaded Round Sleeve Connector Rod Bar Stud Tube Nut Hardware Fastener, Silver Pack of 30
  • This component serves multiple functions such as connecting rods, pulling rods, or the top column, effectively acting as a nut for connecting or extending purposes. It has a wide range of remote-controlled cars and devices, including RC airplanes, FPV quadcopters, drones, RC trucks, racing cars, quads, and RC boats.
  • Material: Carbon Steel; Color: Silver; Thread Size: M4; Thread Pitch: 0.7mm; Coupling Nut Size: 5.4x15mm / 0.21x0.59 Inch (Outer Diameter*Length); Thread Length of Each Side: 15mm / 0.59 inch
  • Made of carbon steel material, smooth surface, with good appearance, and durable to use. Easy to use, no need for tools.
  • Easy to install, each coupling nut can connect two thread pipes on both end. Or you can use screw on it.
  • Please note the thread size before buying.

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Last update on 2025-04-17 / Affiliate links / Images from Amazon Product Advertising API