Danfoss / Eaton Cplng HK Series

Description & Features

Designed for demanding environments, the Danfoss / Eaton Cplng HK Series Quick Disconnect Couplings Plug offers exceptional durability and performance across a range of applications. Constructed from robust carbon steel, this male half coupling is equipped with a push-to-connect end type and a female NPTF connection, ensuring secure and efficient fluid transfer. The couplings are certified to ISO 7241-1 Series B standards and are compatible with a wide array of industries, including agriculture, construction, and aerospace.

Featuring a ball lock internal connection type, the coupling allows for quick and easy connections without the need for special tools. With a flow rate of 2.9 gallons per minute, it exceeds ISO 16028 operating pressures, making it ideal for use in high-pressure hydraulic systems. The seal material is EPDM, offering excellent resistance to a variety of fluids. This product is part of the renowned Hansen sub-brand, ensuring reliability and quality in every use.

SKU: 3K21192

Supplier Part Number (MPN): 3K21192

Specifications

Brand
Aeroquip® by Danfoss
Connection Size 1
3/8 in
Connection Size 2
3/8 in
Connection Style
Manual
Connection Type
FNPT
Connection Type 1
Female NPTF
Connection Type 2
Female NPTF
Dimensions
1.76 in L
Finish
Zinc Trivalent
Fitting Type
Coupling
Fluid Compatibility
Hydraulic Fluids
Hex Size
7/8 in
Latch Type
Push/Pull
Material
Steel
Material Construction
Carbon Steel
Maximum Operating Pressure
4000 psi
nmfc
50
Operating Temperature
-65 to 300 deg F
Seal Material
EPDM
Segment Code
C
Series
HK Series
Thread Size
3/8-18
Valve Type
2-Way

Product Questions & Answers (1)

Question by: Phil K on Dec 5, 2025, 10:30 AM
Is this the kind of fitting I can just push together without any wrenches or anything?
Answer by: Customer Support on Dec 6, 2025, 7:53 PM
That's right, this coupling is designed with a push-to-connect end type, so no special tools are needed for quick and easy connections.

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