SKU: 39646847121

1" NH (NST) Male x 2.5" NH (NST) Male Adapter Aluminum

Sale price$98.05 Regular price$108.94
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Description

1" NH (NST) Male x 2.5" NH (NST) Male Adapter AluminumSpecifications Male Side 1 1 NH (NST) Male (National Hose National Standard Thread) Male Side 2 2. 5 NH (NST) Male (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

Specifications

  • Male Side 1 – 1” NH (NST) Male (National Hose / National Standard Thread)
  • Male Side 2 – 2.5” NH (NST) Male (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

Fire & Industrial 1” NH (NST) x 2.5” NH (NST) Double Male Fitting Anodized Aluminum

Need a double male fire hose 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. 

More About Double Male Adapters

A pipe/hose fitting adapter is used to connect straight pipe or hose sections, to adapt to different sizes or shapes, and for other purposes. 

Pipe nipple is a length of straight pipe with male threads on both ends. It is one of the most popular category of pipe & hose fittings. It is a connector or a coupling threaded on both ends. Pipe nipples are used to allow items with different threads to be connected together. They are used to fit straight / tapered end hose or pipes. A combination of pipe nipples are recommended for low-pressure discharge and suction service for various compatible liquids and not for compressible products like air, nitrogen or steam. 

A coupling (or coupler) (used in piping or plumbing) is a very short length of pipe or tube, with a socket at one or both ends that allows two pipes or tubes to be joined, welded (steel), brazed or soldered (copper, brass etc.) together.

Alternatively if a short length of pipe with two female National pipe threads (NPT) (in North American terms, a coupler is a double female while a nipple is double male) or two male or female.

If the two ends of a coupling are different (e.g. one NST/NH threaded and one NPT threaded), then it is usually referred to as an adapter. 

Our Guarantee

We 100% guarantee our adapters.  If you are unhappy with your purchase you can return it within 30 days NO QUESTIONS ASKED!
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39646847121

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Bobbi
Charlottesville, US
★★★★★ 5
IMPRESSED!
Item Package Quantity: 1, Item Package Quantity: 1
I bought this for my Honda civic 2017 lx 1.5 and it is a perfect fit. I didn’t realize how important it is to change it. Let me tell you if you are thinking about buying this, it’s your sign not JUST because of health which is vital and first and foremost but the PRICE! At any oil change or auto shop they will charge no less than 50$ and I’ve seen higher. I will continue to buy this brand. I will update in my next 5,000 miles. 8.00$ or 50$+ and the quality is EXACTLY the same, your choice.
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Reviewed in the United States on April 3, 2026
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Amazon Customer
Houston, US
★★★★★ 5
2016 Honda civic ex
Item Package Quantity: 1
Fits perfectly in my 2016 Honda Civic EX. Installation was quick and easy, and the air coming from the vents smells much cleaner now. It seems to trap dust and pollen well and is a good replacement for the OEM filter.
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Reviewed in the United States on January 11, 2026
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Quilly
Louisville, US
★★★★★ 5
Do it yourself and save big bucks
Item Package Quantity: 1
Perfect fit and reasonable price. Easy to replace in my 2019 Honda CR-V. It takes about 10 minutes to replace. Don't let a dealership rip you off.
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Reviewed in the United States on May 14, 2026
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Amazon Customer
Louisville, US
★★★★★ 5
2017 Honda Civic Air Cabin Filter
Item Package Quantity: 1
Perfect fit and exactly what was needed. No issues, no concerns, and no nonsense. Will buy again when needed.
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Reviewed in the United States on March 23, 2026
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Gary P.
Draper, US
★★★★★ 4
Fits fine.
Item Package Quantity: 1
Fits fine in my 2020 Honda CRV.
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Reviewed in the United States on March 7, 2026

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