Hydraulic Pipe Thread Adapters

Hydraulic Pipe Thread Adapters
  • Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 45° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 45° Bent Tube Coupling (ACA) (G45591-0606)
    1
    # mpn1894197615
    PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 45° Bent Tube Coupling (ACA) (G45591-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    High quality at an affordable priceExpertly made from premium materials
    $10.26
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA) (G45592-0606)
    1
    # mpn1894215256
    PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA) (G45592-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    High quality at an affordable priceExpertly made from premium materials
    $10.49
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA) (G45592-0608)
    1
    # mpn1894207673
    PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA) (G45592-0608) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    High quality at an affordable priceExpertly made from premium materials
    $10.88
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45590-0608)
    1
    # mpn1894215263
    PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45590-0608) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $9.51
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45590-0606)
    1
    # mpn1894197618
    PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45590-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $9.03
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port
    Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port (G45588-0606)
    1
    # mpn1894215269
    PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port (G45588-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    High quality at an affordable priceExpertly made from premium materials
    $23.28
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube
    Gates® - PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-0606)
    1
    # mpn1894197621
    PolarSeal™ 5/16" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using...
    High quality at an affordable priceExpertly made from premium materials
    $24.30
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Hose Length Extender Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Hose Length Extender Coupling (ACA) (G45535-0606)
    1
    # mpn1894215288
    PolarSeal™ 5/16" Aluminum Hose Length Extender Coupling (ACA) (G45535-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
    High quality at an affordable priceExpertly made from premium materials
    $8.48
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Hose Splicer Coupling (ACA) with R12 Thread Service Port
    Gates® - PolarSeal™ 5/16" Aluminum Hose Splicer Coupling (ACA) with R12 Thread Service Port (G45954-0606)
    1
    # mpn1894207634
    PolarSeal™ 5/16" Aluminum Hose Splicer Coupling (ACA) with R12 Thread Service Port (G45954-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
    High quality at an affordable priceExpertly made from premium materials
    $14.36
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male Inverted O-Ring Bulkhead 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male Inverted O-Ring Bulkhead 90° Bent Tube Coupling (ACA) (G45602-0606)
    1
    # mpn1894197595
    PolarSeal™ 5/16" Aluminum Male Inverted O-Ring Bulkhead 90° Bent Tube Coupling (ACA) (G45602-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...
    High quality at an affordable priceExpertly made from premium materials
    $24.00
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male Inverted O-Ring Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male Inverted O-Ring Coupling (ACA) (G45597-0606)
    1
    # mpn1894215244
    PolarSeal™ 5/16" Aluminum Male Inverted O-Ring Coupling (ACA) (G45597-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
    High quality at an affordable priceExpertly made from premium materials
    $9.34
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male Metric Flareless Assembly Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male Metric Flareless Assembly Coupling (ACA) (G45935-0608)
    1
    # mpn1894197584
    PolarSeal™ 5/16" Aluminum Male Metric Flareless Assembly Coupling (ACA) (G45935-0608) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $17.60
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE 45° Flare Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE 45° Flare Coupling (ACA) (G45195-0606)
    1
    # mpn1894207743
    PolarSeal™ 5/16" Aluminum Male SAE 45° Flare Coupling (ACA) (G45195-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
    High quality at an affordable priceExpertly made from premium materials
    $8.84
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly 90° Block Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly 90° Block Coupling (ACA) (G45511-0606)
    1
    # mpn1894197649
    PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly 90° Block Coupling (ACA) (G45511-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
    High quality at an affordable priceExpertly made from premium materials
    $16.81
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-0608)
    1
    # mpn1894207715
    PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-0608) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...
    High quality at an affordable priceExpertly made from premium materials
    $14.63
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-0606)
    1
    # mpn1894197652
    PolarSeal™ 5/16" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...
    High quality at an affordable priceExpertly made from premium materials
    $11.67
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut 45° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut 45° Bent Tube Coupling (ACA) (G45584-0606)
    1
    # mpn1894215276
    PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut 45° Bent Tube Coupling (ACA) (G45584-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
    High quality at an affordable priceExpertly made from premium materials
    $9.00
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-0606)
    1
    # mpn1894207692
    PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
    High quality at an affordable priceExpertly made from premium materials
    $8.57
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-0606)
    1
    # mpn1894222148
    PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $7.97
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-0607)
    1
    # mpn1894215279
    PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-0607) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $8.79
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port
    Gates® - PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port (G45580-0606)
    1
    # mpn1894197636
    PolarSeal™ 5/16" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port (G45580-0606) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    High quality at an affordable priceExpertly made from premium materials
    $23.86
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Female Braze-On Stems Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Steel Female Braze-On Stems Coupling (ACA) (G45527-0606S)
    1
    # mpn1894207709
    PolarSeal™ 5/16" Steel Female Braze-On Stems Coupling (ACA) (G45527-0606S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
    High quality at an affordable priceExpertly made from premium materials
    $8.25
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Female SAE 45° Flare Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Steel Female SAE 45° Flare Swivel Coupling (ACA) (G45200-0606S)
    1
    # mpn1894215305
    PolarSeal™ 5/16" Steel Female SAE 45° Flare Swivel Coupling (ACA) (G45200-0606S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...
    High quality at an affordable priceExpertly made from premium materials
    $11.60
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Steel Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA) (G45592-0606S)
    1
    # mpn1894197611
    PolarSeal™ 5/16" Steel Female SAE Tube O-Ring Nut Swivel 90° Bent Tube Coupling (ACA) (G45592-0606S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...
    High quality at an affordable priceExpertly made from premium materials
    $11.58
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube
    Gates® - PolarSeal™ 5/16" Steel Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-0606S)
    1
    # mpn1894207684
    PolarSeal™ 5/16" Steel Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-0606S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using...
    High quality at an affordable priceExpertly made from premium materials
    $28.28
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Hose Splicer Coupling (ACA) with R134a Service Port
    Gates® - PolarSeal™ 5/16" Steel Hose Splicer Coupling (ACA) with R134a Service Port (G45956-0606S)
    1
    # mpn1894197569
    PolarSeal™ 5/16" Steel Hose Splicer Coupling (ACA) with R134a Service Port (G45956-0606S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $26.86
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Male Inverted O-Ring Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Steel Male Inverted O-Ring Coupling (ACA) (G45597-0606S)
    1
    # mpn1894197600
    PolarSeal™ 5/16" Steel Male Inverted O-Ring Coupling (ACA) (G45597-0606S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....
    High quality at an affordable priceExpertly made from premium materials
    $25.75
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Steel Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-0606S)
    1
    # mpn1894215273
    PolarSeal™ 5/16" Steel Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-0606S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $14.01
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/16" Steel Male SAE Tube O-Ring Nut Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/16" Steel Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-0607S)
    1
    # mpn1894197634
    PolarSeal™ 5/16" Steel Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-0607S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $17.75
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Female SAE 45° Flare Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Female SAE 45° Flare Swivel Coupling (ACA) (G45200-1210)
    1
    # mpn1894207721
    PolarSeal™ 5/8" Aluminum Female SAE 45° Flare Swivel Coupling (ACA) (G45200-1210) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...
    High quality at an affordable priceExpertly made from premium materials
    $10.57
    In Stock - Ships within 24 hrs




In hydraulic and pneumatic systems, fittings provide the connections between hoses, pipes, and other parts of the installation, including valves, pumps, and tanks. The large availability of Couplings and other fittings can be somewhat confusing and create misunderstanding on their peculiar characteristics. In general, a fitting is a part designed to provide a reliable connection with other components. An adapter is a component that forms a joint between couplings having different types or sizes. In some cases, adapters can work as fittings. The creative but rigorous combinations of different fittings allow designers and engineers to compose efficient hydraulic systems, getting the most from each installation.

Adapters are made from various materials including rubber, brass, and steel. Available types cover all the possible situations; the frequently used ones are female to female, male to female, male to male, barbed, and female cap nut variants, among many others. You can find a wide range of hydraulic pipe thread adapters on our virtual shelves. Made by trustworthy companies, our products meet the highest industry standards for the category and are offered at reasonable prices.

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