PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14-97-0209Coupling Half,quick Disconnect

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4730-00-064-8578 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-064-8578 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-064-8578. Primary manufacturer part number: 14-97-0209.
Features
  • Coupling Half,quick Disconnect — FSC 4730
  • Leg Length: 2.000 INCHES NOMINAL IN
  • Quick Disconnect Method: PUSH-PULL ALL ENDS
  • Connection Style: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS
  • Thread Class: 3A ALL ENDS A
  • Quick Disconnect Nominal Size: 3.688 INCHES ALL ENDS IN
  • Thread Quantity Per Inch: 12 ALL ENDS
  • Thread Series Designator: UN ALL ENDS
Applications
  • Applications requiring Steel Body construction
General Description

The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-064-8578, 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 Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-064-8578
Primary Part Number14-97-0209
Item NameCoupling Half,quick Disconnect
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusCANCELLED
Leg Length2.000 INCHES NOMINAL IN
Quick Disconnect MethodPUSH-PULL ALL ENDS
Connection StyleEXTERNAL SEAT FOR GASKET SEAL ALL ENDS
Thread Class3A ALL ENDS A
Quick Disconnect Nominal Size3.688 INCHES ALL ENDS IN
Thread Quantity Per Inch12 ALL ENDS
Thread Series DesignatorUN ALL ENDS
Style DesignatorMALE COUPLING HALF
MaterialSTEEL BODY
Material Document and ClassificationMIL-S-15083 MIL SPEC SINGLE MATERIAL RESPONSE BODY
Nominal Thread Size2.125 INCHES ALL ENDS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4730-00-064-857914-97-0210ASSYF INTERCHANGEABLE
Coupling Assembly,tube,flexible
Electric Boat Corporation Div General Dynamics Electric Boat
4730-00-893-38242640-067PC14-1IN INTERCHANGEABLE
Flange,pipe
Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-177-396914-97-0207 ASSY AC INTERCHANGEABLE
Coupling Assembly,sound Isolatio
Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
14-97-0209 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2640-067 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2640-067EPC1T05-8 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
4730-00-064-8579INTERCHANGEABLE
COUPLING ASSEMBLY,TUBE,FLEXIBLE
14-97-0210ASSYF
4730-00-893-3824INTERCHANGEABLE
FLANGE,PIPE
2640-067PC14-1IN
4730-01-177-3969INTERCHANGEABLE
COUPLING ASSEMBLY,SOUND ISOLATIO
14-97-0207 ASSY AC

Frequently Asked Questions

What is NSN 4730-00-064-8578?

NSN 4730-00-064-8578 is a Coupling Half,quick Disconnect, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-064-8578?

NSN 4730-00-064-8578 has 3 cross-referenced part numbers: 14-97-0209 (Electric Boat Corporation Div General Dynamics Electric Boat), 2640-067 (Electric Boat Corporation Div General Dynamics Electric Boat), 2640-067EPC1T05-8 (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 4730-00-064-8578?

There are 3 known substitutes for 4730-00-064-8578: 4730-00-064-8579, 4730-00-893-3824, 4730-01-177-3969. Verify interchangeability with system specifications before substitution.

What are the specifications of 14-97-0209?

Key specifications for 14-97-0209: Leg Length: 2.000 INCHES NOMINAL IN; Overall Length: 4.562 INCHES NOMINAL IN; Quick Disconnect Method: PUSH-PULL ALL ENDS; Connection Style: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-064-8578 still in active supply?

NSN 4730-00-064-8578 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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