DANFOSS / EATON FLEXMASTER - CODE FX

Description & Features

Designed for tube and pipe joint connections in hydraulic and industrial systems, the Danfoss / Eaton Flexmaster - Code Fx is a carbon steel sleeve fitting that supports quick connect and disconnect functionality. This design simplifies maintenance and reduces downtime during routine servicing or component replacement.

With female-to-female end configuration and a size 3 designation on both ends, this Flexmaster sleeve accommodates line, hose, and tube connections at each port. The carbon steel construction provides reliable durability across typical hydraulic service conditions, while the sleeve's ability to absorb machine vibration helps protect connected components from stress and fatigue over time.

Supplied under the Aeroquip sub-brand.

SKU: NK1237-300B0650

Supplier Part Number (MPN): NK1237-300B0650

Specifications

Brand
Danfoss
Connection Type
Tube
Dimensions
3-1/2 in Dia x 6-1/2 in L
Finish
Zinc-Plated
Fitting Type
Sleeve
Material
Steel
Material Construction
Carbon Steel
nmfc
50
Nominal Size
#03
Series
NK1237 Series

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S06

Product Questions & Answers (1)

Question by: Wayne T on Oct 1, 2025, 3:53 PM
If I'm getting some vibration in my hydraulic system, will this sleeve help cut down on that?
Answer by: Customer Support on Oct 2, 2025, 9:35 PM
Yes, this Flexmaster sleeve is designed to absorb machine vibration, which can help protect other connected components from stress and fatigue over time. That's a common reason folks use these.

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