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3000/4000/5000/6000 Series MIL-C-4109 Industrial Interchange Air Quick Disconnect, Male Half, -04 Coupling, 3/8 Inch Hose Shank

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Description & Features

Designed for one-hand push-to-connect use, this brass male half quick disconnect couples via an automatic sleeve with a protective collar that resists accidental snagging and disconnection. The 3000/4000/5000/6000 Series MIL-C-4109 Industrial Interchange Air Quick Disconnect, Male Half, -04 Coupling, 3/8 Inch Hose Shank meets the dimensional requirements of MIL-C-4109, ensuring broad industrial interchangeability across compatible systems. A 360° swivel design eliminates hose kinking, and a pin latching mechanism provides secure engagement during use.

Standard seal material is Buna-N, and the brass body offers reliable durability in compressed air service. Maximum operating pressure varies by model series, Dixon models are rated to 300 PSI, while Aeroquip FD40 Series models reach 500 PSI. Compatible with Aeroquip FD40 and FD41 Series (Aro 210), Tru-Flate, and Parker automotive male halves, this coupling suits a wide range of industrial air tool and equipment connections.

SKU: DCP2144

Supplier Part Number (MPN): DCP2144

Alternate Part Numbers: C1FQ20, MI-00282904, MINO-00240F29890

Specifications

Brand
DIXON
Connection Size 1
1/4 in
Connection Size 2
3/8 in
Connection Type
Barbed, Quick-Disconnect
Connection Type 1
Quick Disconnect
Connection Type 2
Hose Barbed
Dimensions
1-15/16 in L
Fitting Type
Plug
Material
Steel
Material Construction
Steel
Operating Temperature
-40 to 250 deg F
Sg Maximum Operating Pressure
Aeroquip Models 500 psi, Oetiker Models 360 psi, Milton Models 300 psi, Dixon Models 300 psi
Sg Milton Coupling Features
Ideal for Use when Male Half Type is not Known, Accepts Male Halves from Aeroquip FD40 Series, Aeroquip FD41 Series (Aro 210), Tru-flate and Parker (Automotive), Rust Resistant - Made of Heavy-Duty Brass, Push Type - Body Engages Automatically, Drag Guard
Sg Oetiker Swing Coupling Features
Interchanges with Aeroquip FD40 Series, Safe Automatic Venting of Trapped Air when Disconnecting, Meets Dimensional Requirements of Mil-C-4109 for Industrial Interchangeability, to Connect, Insert Male Half into Coupling in Angled Position, Swing the Halv
Thread Sealant
Without Thread Sealant

Product Questions & Answers (2)

Question by: Hank C on Dec 10, 2025, 6:31 PM
trying to swap out an old industrial air plug, will this -04 male half fit the common MIL-C-4109 style couplers?
Answer by: Customer Support on Dec 11, 2025, 9:33 PM
Because it meets the dimensional requirements of MIL-C-4109, it is meant to interchange with other industrial interchange couplers built to that same standard. It is also called out as accepting Aeroquip FD40 and FD41 (Aro 210), Tru-Flate, and Parker automotive male halves.
Question by: Vince A on Jun 11, 2025, 7:07 AM
Will this fit my existing Aeroquip FD40 setup without any issues?
Answer by: Customer Support on Jun 12, 2025, 1:53 PM
This male half quick disconnect is compatible with Aeroquip FD40 and FD41 Series (Aro 210) male halves, so it should integrate smoothly into your current system.

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