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1000/400/500 Series MIL-C-4109 Industrial Interchange Air Quick Disconnect, Male Half, -08 Coupling, 1/2-14 Female NPT

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Description & Features

Engineered for general pneumatics construction and industrial plants this Eaton FD40 Series Air Quick Disconnect offers reliable performance under varying temperatures from -40deg;F and above. Designed to meet the MIL-C-4109 dimensional requirements it ensures industrial interchangeability facilitating smooth integration within your existing systems.

Constructed with a protective collar and an automatic sleeve the quick disconnect prevents accidental disconnections and allows for easy one-hand push-to-connect operation. The robust pin latching mechanism combined with a standard body material of brass provides long-lasting durability and seal integrity.

Featuring a 1/2-14 NPTF thread and a Buna-N standard seal material this coupling is tailored for a maximum operating pressure of up to 500 PSI making it ideal for demanding industrial applications. The male half of the coupling swivels 360deg; effectively reducing hose kinking and ensuring smooth operational flow.

MPN: C1LB55

Supplier Part Number: 55

Specifications

A
2.34
Application
General Pneumatics, Construction, Industrial Plants
Coupling Size
-08
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13556
End Size 2
0.50
End Type 1
Push to Connect
End Type 2
NPTF
Minimum Working Temperature
-40
Seal Material
Buna-N
Supplier Part Number
55
Thread 1
1/2-14
Thread Sealant
No
Alternate Part Numbers
Alternate Part Number C1LB55, Alternate Part Number MI-00283146, Alternate Part Number MINO-00402F29950
Product Weight
1.89 lbs

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Product Questions & Answers (1)

Question by: Randy M on Sep 12, 2025, 6:34 PM
Running this on a general plant air setup, will it hold up at 500 PSI without leaking down over time?
Answer by: Customer Support on Sep 14, 2025, 9:55 AM
At 500 PSI, this is right at the rated max for the Aeroquip models in this series, so it's built to handle that load in a steady plant air environment. The brass body and Buna-N seal work together to hold integrity at that pressure. Just keep in mind that 500 PSI is the ceiling, not a suggested sweet spot, so if your system runs close to that regularly, make sure your lines and fittings upstream are matched accordingly.