PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-59439Coupling Half,quick Disconnect

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4730-01-094-1902 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-094-1902 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-094-1902. Primary manufacturer part number: A-A-59439.
Features
  • Coupling Half,quick Disconnect — FSC 4730
  • Style Designator: MALE COUPLING HALF
  • Connection Type: THREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
  • Connection Type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
  • Nondefinitive Spec/std Data: A CLASS AND 1 STYLE AND 2 TYPE
  • Specification/standard Data: 81349-MIL-C-4109 GOVERNMENT SPECIFICATION
  • Quick Disconnect Method: PUSH-PULL ALL ENDS
  • Thread Series Designator: NPT ALL ENDS
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-094-1902, 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 Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-094-1902
Primary Part NumberA-A-59439
Item NameCoupling Half,quick Disconnect
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Style DesignatorMALE COUPLING HALF
Connection TypeTHREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
Connection TypeEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
Nondefinitive Spec/std DataA CLASS AND 1 STYLE AND 2 TYPE
Specification/standard Data81349-MIL-C-4109 GOVERNMENT SPECIFICATION
Quick Disconnect MethodPUSH-PULL ALL ENDS
Thread Series DesignatorNPT ALL ENDS
Nominal Thread Size0.375 INCHES ALL ENDS IN
MaterialCOPPER ALLOY BODY
Connection StylePLAIN ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-01-050-4033 INTERCHANGEABLE
Coupling Half,quick Disconnect
Cross-Reference Index
Part NumberManufacturer
A-A-59439 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
M4109-09-12-00-B Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AA59439-009-12-00-B Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MIL-C-4109 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-01-050-4033INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT

Frequently Asked Questions

What is NSN 4730-01-094-1902?

NSN 4730-01-094-1902 is a Coupling Half,quick Disconnect, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-094-1902?

NSN 4730-01-094-1902 has 4 cross-referenced part numbers: A-A-59439 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), M4109-09-12-00-B (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AA59439-009-12-00-B (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MIL-C-4109 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-01-094-1902?

There is 1 known substitute for 4730-01-094-1902: 4730-01-050-4033. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-59439?

Key specifications for A-A-59439: Style Designator: MALE COUPLING HALF; Connection Type: THREADED EXTERNAL PIPE FIRST FLUID END CONNECTION; Connection Type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END; Nondefinitive Spec/std Data: A CLASS AND 1 STYLE AND 2 TYPE. 10 total characteristics are documented in the Federal Logistics Information System.

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