PartsTable TECHNICAL DATA SHEET
NSN 4730-01-573-8254Government record, cited

Coupling Assembly, Tube, Flexible4730-01-573-8254

NSN 4730-01-573-8254 · NIIN 015738254 · Part number 7M765-20C-1S
The Boeing Company Div Defense · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 76301
Government record, cited
NSN 4730-01-573-8254 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-573-8254. Manufacturer of record part number: 7M765-20C-1S.
Also searched as  4730-01-573-8254 · 4730015738254 · NIIN 015738254 · 01-573-8254 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 76301 · 7M765-20C-1S · 7M765 · 14C23-20C
Nearby stock numbers  ·
Features
  • Coupling Assembly,tube,flexible — FSC 4730
  • Tube Outside Diameter for Which Designed: 1.250 INCHES NOMINAL IN
  • Style Designator: FLEXIBLE COUPLING ASSEMBLY
  • Outside Diameter: 1.770 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING
  • 1 manufacturer part number on file
  • Manufacturer of record: The Boeing Company Div Defense
Identification
  • NSN: 4730-01-573-8254
  • NIIN: 015738254
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 7M765-20C-1S
  • Manufacturer: The Boeing Company Div Defense
General Description

The Coupling Assembly,tube,flexible, cataloged under National Stock Number 4730-01-573-8254, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-573-8254
Primary Part Number7M765-20C-1S
Item NameCoupling Assembly,tube,flexible
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Tube Outside Diameter for Which Designed1.250 INCHES NOMINAL IN
Style DesignatorFLEXIBLE COUPLING ASSEMBLY
Outside Diameter1.770 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeF
⇄ Related Items 5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-573-831114J23-28A POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
Possible match (shared part number)Hydraflow
4730-01-573-833414J23-20C POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
Possible match (shared part number)Hydraflow
4730-01-573-835114J23-24C POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
Possible match (shared part number)Hydraflow
4730-01-574-538614C23-28A POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
Possible match (shared part number)Hydraflow
4730-01-574-53947M765-24C-1S POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
Possible match (shared part number)The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
7M765-20C-1S PRIMARY The Boeing Company Div Defense (USA)
Reference documents
ReferenceMeaning
7M765 D/9 Drawing number reference only
The Boeing Company Div Defense
14C23-20C 5/1 Secondary reference
Hydraflow
Related Parts
4730-01-573-8311POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
14J23-28A
4730-01-573-8334POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
14J23-20C
4730-01-573-8351POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
14J23-24C
4730-01-574-5386POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
14C23-28A
4730-01-574-5394POSSIBLE MATCH
COUPLING ASSEMBLY,TUBE,FLEXIBLE
7M765-24C-1S

Frequently Asked Questions

What is NSN 4730-01-573-8254?

NSN 4730-01-573-8254 is a Coupling Assembly,tube,flexible, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-573-8254?

NSN 4730-01-573-8254 has 1 manufacturer part number on file: 7M765-20C-1S (The Boeing Company Div Defense).

What NSN replaces 4730-01-573-8254?

5 possible matches (shared part number, not a government interchangeability claim): 4730-01-573-8311, 4730-01-573-8334, 4730-01-573-8351. Verify interchangeability with system specifications before substitution.

What are the specifications of 7M765-20C-1S?

Key specifications for 7M765-20C-1S: Tube Outside Diameter for Which Designed: 1.250 INCHES NOMINAL IN; Style Designator: FLEXIBLE COUPLING ASSEMBLY; Overall Length: 0.910 INCHES NOMINAL IN; Outside Diameter: 1.770 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-573-8254 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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