The Coupling,hose, cataloged under National Stock Number 4730-01-274-1820, 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 Empire Abrasive Equipment Co Lp. Government technical data includes 5 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 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 | 4730-01-274-1820 |
| Primary Part Number | NC-1/2 |
| Item Name | Coupling,hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Empire Abrasive Equipment Co Lp |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL HOSE ALL ENDS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Material | ALUMINUM OUTSIDE |
| Material | COPPER ALLOY INSIDE |
| Thread Series Designator | NH ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-274-1820 is a Coupling,hose, manufactured by Empire Abrasive Equipment Co Lp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-274-1820 has 2 manufacturer part numbers on file: NC-1/2 (Empire Abrasive Equipment Co Lp), 505232 (Empire Abrasive Equipment Co Lp).
1 possible match (shared part number, not a government interchangeability claim): 9535-01-293-1107. Verify interchangeability with system specifications before substitution.
Key specifications for NC-1/2: Connection Type: THREADED INTERNAL HOSE ALL ENDS; Nominal Thread Size: 0.500 INCHES ALL ENDS IN; Material: ALUMINUM OUTSIDE; Material: COPPER ALLOY INSIDE. 5 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.