PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA59326/2-1-BCoupling Half,quick Disconnect

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4730-01-139-4511 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-139-4511 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-139-4511. Primary manufacturer part number: AA59326/2-1-B.
Features
  • Coupling Half,quick Disconnect — FSC 4730
  • Material Document and Classification: QQ-C-390,ALLOY 836,844 OR 922 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626,ALLOY 377 FED SPEC SINGLE MATERIAL RESPONSE BODY
  • Quick Disconnect Nominal Size: 0.500 INCHES ALL ENDS IN
  • Nominal Inside Diameter Hose Accommodated: 0.484 INCHES ALL ENDS IN
  • Specification/standard Data: 96906-MS27021 GOVERNMENT STANDARD AND 81349-MIL-C-27487 GOVERNMENT SPECIFICATION
  • Nondefinitive Spec/std Data: 2 TYPE
  • Quick Disconnect Method: CAM-LOCKING ALL ENDS
  • Connection Style: BARBED OR SERRATED END ALL ENDS
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-139-4511, 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 7 commercial cross-references from 3 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
NSN4730-01-139-4511
Primary Part NumberAA59326/2-1-B
Item NameCoupling Half,quick Disconnect
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Material Document and ClassificationQQ-C-390,ALLOY 836,844 OR 922 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626,ALLOY 377 FED SPEC SINGLE MATERIAL RESPONSE BODY
Quick Disconnect Nominal Size0.500 INCHES ALL ENDS IN
Nominal Inside Diameter Hose Accommodated0.484 INCHES ALL ENDS IN
Specification/standard Data96906-MS27021 GOVERNMENT STANDARD AND 81349-MIL-C-27487 GOVERNMENT SPECIFICATION
Nondefinitive Spec/std Data2 TYPE
Quick Disconnect MethodCAM-LOCKING ALL ENDS
Connection StyleBARBED OR SERRATED END ALL ENDS
Leg Length1.312 INCHES MINIMUM IN
MaterialCOPPER ALLOY BODY
Connection TypeUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
Connection TypeEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
Style DesignatorMALE COUPLING HALF
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
4730-01-164-9254 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-01-231-2789 INTERCHANGEABLE
Coupling Half,quick Disconnect
Cross-Reference Index
Part NumberManufacturer
AA59326/2-1-B 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)
MS27021-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
A-A-59326/2 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
AA59326/2II21 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MIL-C-27487 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-A-59326/2B-1-B 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
4730-01-164-9254INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-01-231-2789INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-01-649-9848INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT

Frequently Asked Questions

What is NSN 4730-01-139-4511?

NSN 4730-01-139-4511 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 4730-01-139-4511?

NSN 4730-01-139-4511 has 7 cross-referenced part numbers: AA59326/2-1-B (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), MS27021-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), A-A-59326/2 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA59326/2II21 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 2 more.

What NSN replaces 4730-01-139-4511?

There are 11 known substitutes for 4730-01-139-4511: 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 AA59326/2-1-B?

Key specifications for AA59326/2-1-B: Material Document and Classification: QQ-C-390,ALLOY 836,844 OR 922 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626,ALLOY 377 FED SPEC SINGLE MATERIAL RESPONSE BODY; Quick Disconnect Nominal Size: 0.500 INCHES ALL ENDS IN; Nominal Inside Diameter Hose Accommodated: 0.484 INCHES ALL ENDS IN; Specification/standard Data: 96906-MS27021 GOVERNMENT STANDARD AND 81349-MIL-C-27487 GOVERNMENT SPECIFICATION. 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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