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 4730-00-693-8989 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-693-8989 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-693-8989. Primary manufacturer part number: A-A-2921.
Features
  • Coupling Assembly,hose — FSC 4730
  • Connection Style: INSERT (HOSE) THIRD END
  • Material: RUBBER GASKET
  • Nominal Thread Size: 0.500 INCHES FIRST END IN
  • Thread Quantity Per Inch: 11-1/2 FIRST END
  • Nondefinitive Spec/std Data: I TYPE AND 1 CLASS AND 5/8IN. SIZE IN
  • Connection Style: SWIVEL NUT, GASKET SEAL (HOSE) SECOND END
  • Furnished Items and Quantity: 1 GASKET
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Rubber Gasket construction
General Description

The Coupling Assembly,hose, cataloged under National Stock Number 4730-00-693-8989, 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 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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
NSN4730-00-693-8989
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
Connection StyleINSERT (HOSE) THIRD END
MaterialRUBBER GASKET
Nominal Thread Size0.500 INCHES FIRST END IN
Thread Quantity Per Inch11-1/2 FIRST END
Nondefinitive Spec/std DataI TYPE AND 1 CLASS AND 5/8IN. SIZE IN
Connection StyleSWIVEL NUT, GASKET SEAL (HOSE) SECOND END
Furnished Items and Quantity1 GASKET
Connection TypeUNTHREADED EXTERNAL HOSE THIRD END
Thread Quantity Per Inch11-1/2 SECOND END
Seat TypeGASKET
Connection StyleINSERT (HOSE) FOURTH END
Nominal Thread Size0.500 INCHES SECOND END IN
Connection TypeUNTHREADED EXTERNAL HOSE FOURTH END
Connection TypeTHREADED EXTERNAL HOSE FIRST END
Nominal Inside Diameter Hose Accommodated0.625 INCHES THIRD END IN
Thread Series DesignatorNH SECOND END
Connection StylePLAIN (HOSE) FIRST END
Media for Which DesignedWATER SINGLE RESPONSE
Connection TypeTHREADED INTERNAL HOSE SECOND END
MaterialCOPPER ALLOY BODY
Nominal Overall Length1.600 INCHES IN
Specification/standard Data58536-A-A-2921 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Thread Series DesignatorNH FIRST END
Nominal Inside Diameter Hose Accommodated0.625 INCHES FOURTH END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-063-3911 INTERCHANGEABLE
Coupling Assembly,hose
4730-00-063-3912 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
4730-00-693-8990 INTERCHANGEABLE
Coupling Assembly,hose
Cross-Reference Index
Part NumberManufacturer
A-A-2921 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
AA2921C1A Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
WWC1692 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
7462U5-8 Mcmaster-Carr Supply Co (USA)
7462T12 Mcmaster-Carr Supply Co (USA)
85CL5-8 Sherman H B Mfg Co Div of Dayton-Walther Corp (USA)
Related Parts
4730-00-063-3911INTERCHANGEABLE
COUPLING ASSEMBLY,HOSE
4730-00-063-3912INTERCHANGEABLE
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
4730-00-693-8990INTERCHANGEABLE
COUPLING ASSEMBLY,HOSE

Frequently Asked Questions

What is NSN 4730-00-693-8989?

NSN 4730-00-693-8989 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 4730-00-693-8989?

NSN 4730-00-693-8989 has 6 cross-referenced part numbers: A-A-2921 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA2921C1A (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), WWC1692 (Federal Specifications Promulgated by General Services Administration Washington DC), 7462U5-8 (Mcmaster-Carr Supply Co), 7462T12 (Mcmaster-Carr Supply Co) and 1 more.

What NSN replaces 4730-00-693-8989?

There are 7 known substitutes for 4730-00-693-8989: 4730-00-063-3911, 4730-00-063-3912, 4730-00-063-3913 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-2921?

Key specifications for A-A-2921: Special Features: ZINK PLATED,STEEL GRIPPERS ON BOTH UNTHREADED ENDS; Connection Style: INSERT (HOSE) THIRD END; Material: RUBBER GASKET; Nominal Thread Size: 0.500 INCHES FIRST END IN. 25 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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