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1000/400/500 Series MIL-C-4109 Industrial Interchange Air Quick Disconnect, Male Half, -06 Coupling, 1/4-18 Male NPT

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Description & Features

The Danfoss / Eaton Hansen 400 Series Quick Disconnect Couplings Plug is designed for general pneumatics construction and industrial plants ensuring reliable fluid transfer. Featuring a 1/4-18 Male NPT connection with a -06 coupling size this quick disconnect meets the MIL-C-4109 dimensional requirements for industrial interchangeability.

The automatic sleeve allows seamless push-to-connect operation with one hand while the protective collar prevents accidental disconnection. Additionally it swivels 360deg; reducing hose kinking.

Constructed from durable brass and utilizing a Buna-N seal material it operates effectively within a temperature range of -40deg;F and can handle maximum pressures up to 500 PSI.

**MPN**: C1MM55

**Supplier Part Number**: 40

Specifications

A
1.88
Application
General Pneumatics, Construction, Industrial Plants, Fluid transfer
Coupling Size
-06
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 1
0.25
End Size 2
0.25
End Type 1
Push to Connect
End Type 2
NPTF
Minimum Working Temperature
-40
Safety locking Mechanism
Sleeve lock
Seal Material
Buna-N
Supplier Part Number
40
Thread 1
1/4-18
Thread Sealant
No
Alternate Part Numbers
Alternate Part Number C1MM55, Alternate Part Number MINO-00015X16347
Product Weight
0.08 lbs

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Product Questions & Answers (3)

Question by: Merle R on Jun 20, 2025, 9:35 AM
Is this fitting compatible with other brands that meet the MIL-C-4109 standard? I got a bunch of different fittings floating around.
Answer by: Customer Support on Jun 22, 2025, 6:19 AM
This Eaton/Danfoss Hansen 400 Series quick disconnect plug meets the MIL-C-4109 dimensional requirements, so it should interchange with other brands adhering to that standard.
Question by: Dean W on Jan 16, 2026, 7:25 PM
trying to swap out an old air plug, is this the male half with 1/4-18 male npt threads?
Answer by: Customer Support on Jan 18, 2026, 6:33 AM
You are looking at a male half industrial interchange air quick disconnect plug with 1/4-18 male NPT threads and a -06 coupling size.
Question by: Tammy R on Jun 8, 2025, 8:38 AM
does this thing work with standard shop air fittings or do i need something special to match it up?
Answer by: Customer Support on Jun 10, 2025, 6:30 AM
Built to meet MIL-C-4109 dimensional requirements, this male half is meant to interchange with other industrial interchange couplings that follow the same standard. That covers a wide range of common shop setups. The coupling size is -06 with a 1/4-18 Male NPT thread, so as long as your female half matches that spec and follows the industrial interchange pattern, you should be good to go without hunting down anything out of the ordinary.