# Dixon HU400300 400-Series Hammer Union 4 in Steel - MROSupply.com

***Dixon HU400300 400-Series hammer union, 4-inch steel hose fitting for high-pressure connections in oilfield, mining, and heavy equipment applications. Rugged steel construction ensures durability and reliable sealing under demanding conditions. Designed for quick assembly and disassembly, this hammer union provides secure, leak-resistant performance in industrial fluid transfer systems.***



## Product details:

- Catalog number: HU400300
- SKU: 2071925
- Price: ***$167.56*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Dixon](https://www.mrosupply.com/brands/dixon/)
- Category: 
    - [Caps & Nuts](htts://www.mrosupply.com/hydraulics-and-pneumatics/hose-pipe-tube-fittings/adapters/caps-nuts/)
    - [Adapters](htts://www.mrosupply.com/hydraulics-and-pneumatics/hose-pipe-tube-fittings/adapters/)
    - [Hose, Pipe, Tube & Fittings](htts://www.mrosupply.com/hydraulics-and-pneumatics/hose-pipe-tube-fittings/)
    - [Hydraulics and Pneumatics](htts://www.mrosupply.com/hydraulics-and-pneumatics/)
- Unit of measure: each
- Weight: 65.000 lb
- Technicall support: contact supplier for technical support on 8779634966


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Material: Forged Steel
  

  
- Max operating pressure: 4000 PSI NSCWP
  

  
- Size: 3 in
  

  
- Style: Threaded
  

  
- Temperature range: -20F to 250F (-29C to 121C)
  
## Product documents / software:

- [Catalog Page](https://documents.mrosupply.com/product_documents/HU/HU1002200BW/DPL417_J2520-252030_uSF9KPN.pdf)
- [HU400300 3^ FORGED STEEL HAMMER UNION 400 SERIES RED SUB BLACK NUT](https://documents.mrosupply.com/product_documents/20/71/2071925/Dixon_HU400200_Catalog_smwMLH0.pdf)
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## Product's reviews:
- Dixon 8hf8-b 1" iso-b coupler 1" nptf brass 200025-8 - Great price, fast delivery.
- Dixon 6hf6-b 3/4" iso-b coupler 3/4" nptf bras 200025-6 - Great price, fast delivery.
- Crimps! - The dies work, MRO ... the retailer ... nice ... quick ... good price and delivered in days
- Reasonable and reasonably fast shipping - My order was processed very quickly even with the changes I made on my original order with friendly people at MRO