SKU: 18803816903

3.5" NH (NST) Female x 4" NPSH Female Adapter Aluminum

Sale price$221.24 Regular price$245.82
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Description

3.5" NH (NST) Female x 4" NPSH Female Adapter AluminumIndustrial & Fire Grade 3. 5 NH (NST) x 4 NPSH Double Swivel Female Fitting Anodized Aluminum Need a double female 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

Industrial & Fire Grade 3.5” NH (NST) x 4” NPSH Double Swivel Female Fitting Anodized Aluminum

Need a double female 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.

 

Specifications

  • Female Swivel Side 1 3.5” NH (NST) Female (National Hose / National Standard Thread)
  • Female Swivel Side 2 4” NPSH Female (National Pipe For Straight Hose)
  • 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

More About Double Female Swivel Industrial Adapters

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

A Fire Hose adapter is a length of straight or tapered pipe with male or female 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 adapters 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 adapters are recommended for low-pressure discharge and suction service for various compatible liquids and not for compressible products like air, nitrogen or steam.

Alternatively if a short length of pipe with two female (NH-NST-NPSH-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: 18803816903

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4.5 ★★★★★
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M
Mark Roberts
Battle Creek, US
★★★★★ 5
Excellent industrial shelving hardware for the price
I bought these as a housewarming-style gift for my brother-in-law, who recently finished building an extension onto his home and finally has the space for a proper office. His family’s aesthetic leans heavily toward that cottage-meets-industrial look, and these brackets fit the brief perfectly. First impressions were excellent. The iron construction feels genuinely heavy-duty, and the machining and threading are better than I expected at this price point. The finish is a clean matte black that looks sharp without feeling overly glossy or cheap. Installation is straightforward if you’re comfortable with basic wall mounting. Because these are iron pipe components, you may find yourself making tiny adjustments with micro shims to get everything perfectly level depending on your wall and stud placement. That’s not a flaw so much as the nature of pipe-style systems. Once dialed in, though, they feel very solid. The scale is also worth mentioning. These are not subtle brackets—they’re a bit of a statement piece. That’s great if you want the shelving to become part of the room’s visual identity, but it’s something to be aware of when planning the space. One thing I actually appreciate is that they don’t include the wood shelves. Bundled wood usually drives up the cost and often isn’t the species or finish you’d want anyway. This way you can choose your own boards and tailor the look to the room—which is exactly what my brother-in-law ended up doing. Overall, a very well-executed industrial shelving system: sturdy, attractive, and surprisingly refined for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
M
Verified Purchase
Michelle bullard
Louisville, US
★★★★★ 5
Stable and easy to assemble
I used these to support a heavy piece of countertop would to create a side table. Looks great and holds steady.
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Reviewed in the United States on February 15, 2023
C
Verified Purchase
Charles Clerici
Whiting, US
★★★★★ 5
Great
All pieces cut to perfection, went together perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2023
J
Verified Purchase
judith stevens
Belleville, US
★★★★★ 1
Some of the components are plastic
This is not a heavy duty application what so ever . One of the flanges broke . We do not recommend this product
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Reviewed in the United States on July 5, 2024
K
Verified Purchase
Kimberly matthews
Grantham, US
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025

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