PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-25427Coupling Assembly,quick Disconne

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-684-4718 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-684-4718 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-684-4718. Primary manufacturer part number: MIL-DTL-25427.
Features
  • Coupling Assembly,quick Disconne — FSC 4730
  • Connection Style: FLARED FIRST QUICK DISCONNECT END
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST QUICK DISCONNECT END IN
  • Surface Treatment: ANODIZE BODY
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
  • Material: ALUMINUM ALLOY BODY
  • Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Seat Angle: 37.0 DEGREES
Applications
  • Applications requiring Aluminum Alloy Body construction
General Description

The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-00-684-4718, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-684-4718
Primary Part NumberMIL-DTL-25427
Item NameCoupling Assembly,quick Disconne
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Connection StyleFLARED FIRST QUICK DISCONNECT END
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST QUICK DISCONNECT END IN
Surface TreatmentANODIZE BODY
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
MaterialALUMINUM ALLOY BODY
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Seat Angle37.0 DEGREES
Style DesignatorCOUPLING ASSEMBLY
Nominal Thread Size1.312 INCHES FIRST QUICK DISCONNECT END IN
Thread Series DesignatorUN FIRST QUICK DISCONNECT END
Maximum Operating Temp274.0 FAHRENHEIT SINGLE RESPONSE DEGF
Thread Class3A FIRST QUICK DISCONNECT END A
Features ProvidedSELF-SEALING
Thread Quantity Per Inch12 FIRST QUICK DISCONNECT END
Connection TypeTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2815-00-180-563716704845 INTERCHANGEABLE
Ring,piston
Fairbanks Morse, Llc
5940-00-197-334632008 INTERCHANGEABLE
Terminal,lug
Abb Installation Products Inc
6680-00-526-66043200-8 INTERCHANGEABLE
Gage,liquid Quantity,float Type
Rochester Sensors, Llc
5961-00-584-4527 INTERCHANGEABLE
Semiconductor Device,diode
4730-00-684-7199 INTERCHANGEABLE
Coupling Assembly,quick Disconne
4730-00-756-9499 INTERCHANGEABLE
Coupling Assembly,quick Disconne
4730-00-795-2837 INTERCHANGEABLE
Flange,pipe
4730-00-795-2838 INTERCHANGEABLE
Flange,pipe
4730-00-812-4150 INTERCHANGEABLE
Flange,pipe
4730-00-812-6916 INTERCHANGEABLE
Flange,pipe
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-25427 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
3200-8 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
MS24333-8 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-25427A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
2815-00-180-5637INTERCHANGEABLE
RING,PISTON
16704845
5940-00-197-3346INTERCHANGEABLE
TERMINAL,LUG
32008
6680-00-526-6604INTERCHANGEABLE
GAGE,LIQUID QUANTITY,FLOAT TYPE
3200-8
5961-00-584-4527INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
4730-00-684-7199INTERCHANGEABLE
COUPLING ASSEMBLY,QUICK DISCONNE
4730-00-756-9499INTERCHANGEABLE
COUPLING ASSEMBLY,QUICK DISCONNE
4730-00-795-2837INTERCHANGEABLE
FLANGE,PIPE
4730-00-795-2838INTERCHANGEABLE
FLANGE,PIPE
4730-00-812-4150INTERCHANGEABLE
FLANGE,PIPE
4730-00-812-6916INTERCHANGEABLE
FLANGE,PIPE
4730-00-815-6491INTERCHANGEABLE
COUPLING ASSEMBLY,QUICK DISCONNE
4730-00-826-8877INTERCHANGEABLE
FLANGE,PIPE

Frequently Asked Questions

What is NSN 4730-00-684-4718?

NSN 4730-00-684-4718 is a Coupling Assembly,quick Disconne, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-684-4718?

NSN 4730-00-684-4718 has 4 cross-referenced part numbers: MIL-DTL-25427 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 3200-8 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), MS24333-8 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-25427A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-684-4718?

There are 12 known substitutes for 4730-00-684-4718: 2815-00-180-5637, 5940-00-197-3346, 6680-00-526-6604 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-25427?

Key specifications for MIL-DTL-25427: Overall Length: 4.659 INCHES NOMINAL IN; Connection Style: FLARED FIRST QUICK DISCONNECT END; Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST QUICK DISCONNECT END IN; Surface Treatment: ANODIZE BODY. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-684-4718 still in active supply?

NSN 4730-00-684-4718 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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