PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-2921Coupling Assembly,hose

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4730-00-063-3912 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-063-3912 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-063-3912. Primary manufacturer part number: A-A-2921.
Features
  • Coupling Assembly,hose — FSC 4730
  • Nominal Overall Length: 2.047 INCHES IN
  • Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS AND 5/8 SIZE
  • Material: COPPER ALLOY OVERALL
  • Connection Style: SOCKET (HOSE) ALL ENDS
  • Nominal Inside Diameter Hose Accommodated: 0.844 INCHES ALL ENDS IN
  • Nominal Outside Diameter Hose Accommodated: 0.625 INCHES ALL ENDS IN
  • 4 verified cross-references
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Coupling Assembly,hose, cataloged under National Stock Number 4730-00-063-3912, 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 6 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-063-3912
Primary Part NumberA-A-2921
Item NameCoupling Assembly,hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Nominal Overall Length2.047 INCHES IN
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS AND 5/8 SIZE
MaterialCOPPER ALLOY OVERALL
Connection StyleSOCKET (HOSE) ALL ENDS
Nominal Inside Diameter Hose Accommodated0.844 INCHES ALL ENDS IN
Nominal Outside Diameter Hose Accommodated0.625 INCHES ALL ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-063-3911 INTERCHANGEABLE
Coupling Assembly,hose
4730-00-063-3913 INTERCHANGEABLE
Mender,hose
4730-00-063-3914 INTERCHANGEABLE
Mender,hose
4730-00-202-8304 INTERCHANGEABLE
Mender,hose
4730-00-202-8305 INTERCHANGEABLE
Mender,hose
4730-00-693-8989 INTERCHANGEABLE
Coupling Assembly,hose
4730-00-693-8990 INTERCHANGEABLE
Coupling Assembly,hose
Cross-Reference Index
Part NumberManufacturer
A-A-2921 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
226-Z Sherman H B Mfg Co Div of Dayton-Walther Corp (USA)
AA2921C2A Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
WW-C-1692 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
4730-00-063-3911INTERCHANGEABLE
COUPLING ASSEMBLY,HOSE
4730-00-063-3913INTERCHANGEABLE
MENDER,HOSE
4730-00-063-3914INTERCHANGEABLE
MENDER,HOSE
4730-00-202-8304INTERCHANGEABLE
MENDER,HOSE
4730-00-202-8305INTERCHANGEABLE
MENDER,HOSE
4730-00-693-8989INTERCHANGEABLE
COUPLING ASSEMBLY,HOSE
4730-00-693-8990INTERCHANGEABLE
COUPLING ASSEMBLY,HOSE

Frequently Asked Questions

What is NSN 4730-00-063-3912?

NSN 4730-00-063-3912 is a Coupling Assembly,hose, 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 4730-00-063-3912?

NSN 4730-00-063-3912 has 4 cross-referenced part numbers: A-A-2921 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 226-Z (Sherman H B Mfg Co Div of Dayton-Walther Corp), AA2921C2A (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), WW-C-1692 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 4730-00-063-3912?

There are 7 known substitutes for 4730-00-063-3912: 4730-00-063-3911, 4730-00-063-3913, 4730-00-063-3914 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-2921?

Key specifications for A-A-2921: Nominal Overall Length: 2.047 INCHES IN; Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS AND 5/8 SIZE; Material: COPPER ALLOY OVERALL; Connection Style: SOCKET (HOSE) ALL ENDS. 6 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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