Premium Tube Fittings | Brass, Steel, & 316 Stainless Steel

Hydraulic Supply Company offers a wide selection of tube fittings designed for secure, leak-free connections. 

With more than 580 items available, our inventory includes brass compression fittings for copper, aluminum, and plastic tubing, steel flareless fittings for hydraulic systems, and 316 stainless steel fittings for environments requiring corrosion resistance. Each fitting is built for durability and reliable performance across fluid and air systems.

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7 Items

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  1. Brass Tube Long Flare Nuts
    Brass Tube Long Flare Nuts

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  2. Brass Tube Long Flare Nuts
    Brass Tube Long Flare Nuts

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  3. Brass Tube Fitting, 0.25 Inch Tube OD To 7/16-20 Thread Long Flare Nut
    Brass Tube Fitting, 0.25 Inch Tube OD To 7/16-20 Thread Long Flare Nut

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  4. Brass Tube Fitting, 0.31 Inch Tube OD To 1/2-20 Thread Long Flare Nut
    Brass Tube Fitting, 0.31 Inch Tube OD To 1/2-20 Thread Long Flare Nut

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  5. Brass Tube Fitting, 0.38 Inch Tube OD To 5/8-18 Thread Long Flare Nut
    Brass Tube Fitting, 0.38 Inch Tube OD To 5/8-18 Thread Long Flare Nut

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  6. Brass Tube Fitting, 0.50 Inch Tube OD To 3/4-16 Thread Long Flare Nut
    Brass Tube Fitting, 0.50 Inch Tube OD To 3/4-16 Thread Long Flare Nut

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  7. Brass Tube Fitting, 0.63 Inch Tube OD To 7/8-14 Thread Long Flare Nut
    Brass Tube Fitting, 0.63 Inch Tube OD To 7/8-14 Thread Long Flare Nut

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

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Applications That Rely on Tube Fittings

Tube fittings are essential components in industries that depend on safe and consistent fluid transfer. Our products support sectors such as agriculture, construction, and mobile machinery and equipment.

  • Brass tube fittings provide dependable compression connections in general fluid and air systems.

  • Steel tube fittings in flareless designs are widely used for hydraulic equipment that faces vibration and pressure demands.

  • 316 stainless steel tube fittings are chosen for corrosive environments where long service life is critical.

For a complete overview of the markets we serve, visit our Industries page.

Support for Tube Fittings & Technical Guidance

Choosing the right tube fitting depends on tubing material, system pressure, and application environment. 

Compression fittings are common for copper, aluminum, and plastic tubing, while flareless steel fittings are designed for hydraulic applications. Stainless steel is recommended where corrosion resistance is a priority.

If you need assistance with sizing, material selection, or compatibility, our team is ready to help. You can also browse fittings by material:

For technical guidance or product support, please contact us.

Tube Fitting FAQs

What Materials Are Available for Tube Fittings?

We supply tube fittings in brass, steel, and 316 stainless steel to match a variety of system requirements.

What Types of Tube Fittings Do You Offer?

Our inventory includes compression and flareless fittings in configurations such as unions, elbows, tees, nuts, ferrules, and plugs.

What Tubing Materials Are Supported?

Brass compression fittings work with copper, aluminum, and plastic tubing. Flareless steel fittings are designed for hydraulic tubing systems.

How Do I Select the Right Tube Fitting?

Material choice depends on tubing type, operating pressure, and environment. For help with fitting selection, visit our contact page.