PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-59326/2Coupling Half,quick Disconnect

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4730-01-231-2789 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-231-2789 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-231-2789. Primary manufacturer part number: A-A-59326/2.
Features
  • Coupling Half,quick Disconnect — FSC 4730
  • Connection Style: BARBED OR SERRATED END ALL ENDS
  • Quick Disconnect Method: CAM-LOCKING ALL ENDS
  • Leg Length: 2.000 INCHES NOMINAL IN
  • Specification/standard Data: 58535-A-A-59326 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Connection Type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
  • Material Document and Classification: QQ-A-601 FED SPEC ALL MATERIAL RESPONSES BODY
  • Style Designator: MALE COUPLING HALF
Applications
  • Applications requiring Aluminum Alloy Body construction
General Description

The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-231-2789, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-231-2789
Primary Part NumberA-A-59326/2
Item NameCoupling Half,quick Disconnect
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Connection StyleBARBED OR SERRATED END ALL ENDS
Quick Disconnect MethodCAM-LOCKING ALL ENDS
Leg Length2.000 INCHES NOMINAL IN
Specification/standard Data58535-A-A-59326 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Connection TypeEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
Material Document and ClassificationQQ-A-601 FED SPEC ALL MATERIAL RESPONSES BODY
Style DesignatorMALE COUPLING HALF
Connection TypeUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
Surface TreatmentANODIZE BODY
Nominal Inside Diameter Hose Accommodated0.750 INCHES ALL ENDS IN
Quick Disconnect Nominal Size1.719 INCHES ALL ENDS IN
MaterialALUMINUM ALLOY BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-360-0592 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-542-4030 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-649-7388 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-873-4535 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-938-7996 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-949-8291 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-01-079-3305 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-01-079-5807 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-01-139-4511 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-01-164-9254 INTERCHANGEABLE
Coupling Half,quick Disconnect
Cross-Reference Index
Part NumberManufacturer
A-A-59326/2 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
AA59326/2B-2-A Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MS27021-3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AA59326/2-2-A Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-59326 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
4730-00-360-0592INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-542-4030INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-649-7388INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-873-4535INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-938-7996INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-949-8291INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-01-079-3305INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-01-079-5807INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-01-139-4511INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-01-164-9254INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-01-649-9848INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT

Frequently Asked Questions

What is NSN 4730-01-231-2789?

NSN 4730-01-231-2789 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 4730-01-231-2789?

NSN 4730-01-231-2789 has 5 cross-referenced part numbers: A-A-59326/2 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA59326/2B-2-A (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MS27021-3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AA59326/2-2-A (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-59326 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 4730-01-231-2789?

There are 11 known substitutes for 4730-01-231-2789: 4730-00-360-0592, 4730-00-542-4030, 4730-00-649-7388 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-59326/2?

Key specifications for A-A-59326/2: Connection Style: BARBED OR SERRATED END ALL ENDS; Quick Disconnect Method: CAM-LOCKING ALL ENDS; Leg Length: 2.000 INCHES NOMINAL IN; Specification/standard Data: 58535-A-A-59326 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 13 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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