The Reducer,hose, cataloged under National Stock Number 4730-01-439-5095, 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 Naval Sea Systems Command. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-439-5095 |
| Primary Part Number | 211065750 |
| Item Name | Reducer,hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Connection Style | GASKET SEAL (HOSE) FIRST END |
| Connection Style | PLAIN (HOSE) SECOND END |
| Nominal Overall Length | 1.700 INCHES IN |
| Connection Type | THREADED INTERNAL HOSE FIRST END |
| Connection Type | THREADED EXTERNAL HOSE SECOND END |
| Material Document and Classification | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 1.000 INCHES FIRST END IN |
| Media for Which Designed | WATER SINGLE RESPONSE |
| Thread Quantity Per Inch | 11-1/2 ALL ENDS |
| Material | COPPER ALLOY 903 OVERALL |
| Thread Series Designator | NPSH FIRST END |
| Thread Series Designator | NH SECOND END |
| Reducer Type | CONCENTRIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6404893 ASSY 89 | Naval Sea Systems Command (USA) |
| 211065750 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6404893 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF2350-1781 ASSY 89 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4730-01-439-5095 is a Reducer,hose, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-439-5095 has 2 manufacturer part numbers on file: 6404893 ASSY 89 (Naval Sea Systems Command), 211065750 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-452-0148, 4730-01-509-7425, 4720-01-511-7778. Verify interchangeability with system specifications before substitution.
Key specifications for 211065750: Connection Style: GASKET SEAL (HOSE) FIRST END; Connection Style: PLAIN (HOSE) SECOND END; Nominal Overall Length: 1.700 INCHES IN; Connection Type: THREADED INTERNAL HOSE FIRST END. 14 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.
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.