The Coupling Assembly,tube,flexible, cataloged under National Stock Number 4730-01-574-5386, 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 Hydraflow. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-574-5386 |
| Primary Part Number | 14C23-28A |
| Item Name | Coupling Assembly,tube,flexible |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydraflow |
| Status | ACTIVE |
| Tube Outside Diameter for Which Designed | 1.750 INCHES NOMINAL IN |
| Outside Diameter | 2.240 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7M765-28D-1S | The Boeing Company Div Defense (USA) |
| 14C23-28A PRIMARY | Hydraflow (USA) |
| Reference | Meaning |
|---|---|
| 7M765 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-01-574-5386 is a Coupling Assembly,tube,flexible, manufactured by Hydraflow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-574-5386 has 2 manufacturer part numbers on file: 7M765-28D-1S (The Boeing Company Div Defense), 14C23-28A (Hydraflow).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-574-5394. Verify interchangeability with system specifications before substitution.
Key specifications for 14C23-28A: Tube Outside Diameter for Which Designed: 1.750 INCHES NOMINAL IN; Outside Diameter: 2.240 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: COUPLING ASSEMBLY - FLEXIBLE, FLUID LINE; Material: ALUMINUM ALLOY. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4730-01-574-5386 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.