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Dixon® Two-Piece Hammer Union Nut

Dixon® Two-Piece Hammer Union Nut

Part Number HU200400RN
Description Hammer union nut replacement
Style Figure 200/206
Used on Flange adapters
Material Forged Steel
Size 4"
Working Pressure 2000 PSI CWP
Weight Lb 7.0000
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  • Replacement for damaged hammer union nuts
  • Used with male one-piece flange adapters


  • Dixon recommends using Loctite® Threadlocker Red 271™ when bolting together two-piece hammer union nuts to ensure that bolts do not loosen when in service. Bolt torque recommendation is 60 foot pounds. Option two is to weld the seams of the split nut.


  • Forged steel meets AISI standards


  • Lug design provides enlarged surface area to hammer
  • Repair nut is pinned and bolted for perfect alignment
  • Nut can be installed on pre-existing hammer union assembly


  • Includes bolts

Available Options

  • Nut is available in other hammer union series and sizes, consult Dixon for more information.

Compatibility & Interchange Data

  • Interchangeable with reliable brands


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