NK-Series Japanese Pneumatic Hose Barb Coupler

NK-Series Japanese Pneumatic Hose Barb Coupler

Part Number 2NKS2
Material Steel
Hose ID 1/4"
Maximum OD 1.02"
Body Size 1/4"
Hex 3/4"
Length 2.40"
Maximum Operating Pressure 300 PSI
Burst Pressure 13500 PSI
Temperature Range -40°F to +250°F (-40°C to +121°C)
Weight Lb 0.3100


  • Machined components are manufactured using solid steel bar stock.
  • Stainless steel springs. Carbon steel balls and retaining rings.
  • Nitrile (Buna-N) seals are standard
  • Steel componentry is plated using ROHS Compliant Trivalent Chrome.

Compatibility & Interchange Data

  • Japanese Industrial Interchange Pneumatic Coupling
  • Nitto Kohki Hi-cupla 200, Rectus Series 13 and CEJN Series 315

Safety notes

  • Operating pressure for couplings utilizing hose barb connections may be dramatically reduced to that of the hose rating and/or hose end connection combination. Consult hose manufacturer's catalog for hose end connection ratings. If in doubt, test under controlled conditions for suitability to application.
  • Dixon cannot assume liability for misapplication of production resulting in equipment down-time, lost production, and/or personal injury including death.
  • It is important to be safe when installing quick disconnect couplings into a pneumatic circuit. Never install a pneumatic coupling directly into an air tool, use a piece of hose that is at least 18" long, between the tool and the coupling, to prevent damage to the coupling. To protect the operator, safety devices, such as a safety check valve and safety cable should be installed in case there is a hose or coupling failure.
  • WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov


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