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High-quality 4" Nh (nst) Female (swivel) X 2-1/2" Nh (nst) Female (rigid) Aluminum Fire Adapter Get 50% Off Today [dIUaqnp9]

$53.99 $172.99 -69%

SpecificationsFemale Side 1 – 4” NH (NST) Female (National Hose / National Standard Thread)Female Side 2 – 2-1/2” NH (NST) Female (National Hose / National Standard Thread)Working Pressure – 300PSI MaxTest Pressure – 1000PSI MaxMaterial – T-6061 Alum

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Specifications

  • Female Side 1 4” NH (NST) Female (National Hose / National Standard Thread)
  • Female Side 2 – 2-1/2” NH (NST) Female (National Hose / National Standard Thread)
  • Working Pressure – 300PSI Max
  • Test Pressure – 1000PSI Max
  • Material – T-6061 Aluminum (Aircraft Grade)
  • Finishing – Anodized (99.9% Lead Free)
  • NFPA Standards - 1963, 4.12, 5.1-5.6.4 (Corrosion Resistance)
  • Military Standards – MIL-A-8625 Type III, Class 1
  • Industrial Standards – International ASTM B221
  • UL Labs Standards – 236 – 8.1 Through 8.2
  • USDA Standards – 5100-190C Tables 1-4
  • Origin – Made In The USA
  • Warranty – 5 Year Manufacture

4” NH (NST) Female x 2-1/2” NH (NST) Female Fitting Anodized Aluminum

Need a female to female adapter? Look no further, this adapter will get the job done in any situation. Adapters manufactured in the USA with hard-coated anodized aluminum are made to withstand abrasion, are anti-corrosive, and can withstand the highest pressures. You can trust that these adapters will meet and EXCEED your industrial and municipal needs.

4 Inch NH-NST Female Swivel x 2.5 Inch NH-NST Female Rigid Compatibility Thread Chart

      Built For Your Industry

      Hardcoat anodized aluminum fittings are widely used in industrial, fire, commercial, and residential applications due to their superior strength, light weight, corrosion resistance, and mostly lead free properties. The fire industry relies on heavy duty adapters that can meet the specifications of NFPA and other fire protection organizations. The agriculture, industrial, and military industry requires the strongest and safest fittings on the market. You can be sure these USA manufactured fittings will meet your needs.

      4 Inch NH-NST Female Swivel x 2.5 Inch NH-NST Female Rigid Industrial Applications Infographic

      Universal For All Applications

      The best part about our high quality fittings is that they work for all types of equipment and applications. Some of these examples include but not limited to: fire hoses & trucks, water pumps, PVC pipe systems, fire hydrants, commercial standpipes, marine vessels, industrial plants, chemical transfer, residential piping systems, shut off valves, & more.

      4 Inch NH-NST Female Swivel x 2.5 Inch NH-NST Female Rigid Fire Hose Pump Hydrant Infographic

      Hardcoat Aluminum Benefits

      • Strong and lightweight – 3 times stronger than brass and more lightweight to carry in tough situations.
      • Superior corrosion resistance to salt and chemicals.
      • Higher working pressures than other metals.
      • Material – T-6061 Aluminum (Aircraft Grade)
      • Anodized aluminum is 99.9% lead free allowing adapter to be used in various applications requiring lead free fittings.
      • We NEVER use additional paint, dye, or other coloring.
      • Hardcoat aluminum provides reduced electrolysis.
      4 Inch NH-NST Female Swivel x 2.5 Inch NH-NST Female Rigid Featured Aluminum Benefits

        The 4" NH (NST) Female Thread Can Connect To:

        • 4" NH Male (National Hose – Fire Hose Standard)
        • 4" NST Male (National Standard Thread – Fire Hose Standard)

        The 2-1/2" NH (NST) Female Thread Can Connect To:

        • 2-1/2" NH Male (National Hose – Fire Hose Standard)
        • 2-1/2" NST Male (National Standard Thread – Fire Hose Standard)

          Warranty & Guarantee

          • We ABSOLUTELY 100% GUARANTEE the quality of our fire adapters.
          • Your adapter will be covered by a 5 YEAR MANUFACTURE WARRANTY.
          • If you are unhappy with your purchase you may return your adapters within 30 days NO QUESTIONS ASKED!
          • Contact us anytime Monday-Friday 9:00am-5:00pm.

          What Our Customers Say

          December 27, 2025

          Absolutely no complaints!

          This is a product that is of great quality and performance.

          - Kai F..

          December 27, 2025

          Absolutely no complaints!

          This is a high-grade, quality item.

          - Kaylee D..

          December 27, 2025

          Absolutely no complaints!

          It's a very well-made and reliable kit.

          - Etta P..

          Write a Review

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