The Reducer,hose, cataloged under National Stock Number 4730-01-309-9980, 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 American Couplings Co. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-309-9980 |
| Primary Part Number | 190-1012 |
| Item Name | Reducer,hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | American Couplings Co |
| Status | ACTIVE |
| Connection Style | BARBED OR BEADED (HOSE) SECOND END |
| Connection Style | PLAIN (HOSE) FIRST END |
| Nominal Inside Diameter Hose Accommodated | 0.625 INCHES SECOND END IN |
| Nominal Overall Length | 1.875 INCHES IN |
| Connection Type | THREADED EXTERNAL HOSE FIRST END |
| Connection Type | UNTHREADED EXTERNAL HOSE SECOND END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Thread Quantity Per Inch | 11-1/2 ALL ENDS |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NH FIRST 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 |
|---|---|
| 190-1012 PRIMARY | American Couplings Co (USA) |
| Reference | Meaning |
|---|---|
| 8525421 | D/9 Drawing number reference only U.S. Government activity |
| 8525421 PIECE 2 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-309-9980 is a Reducer,hose, manufactured by American Couplings Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-309-9980 has 1 manufacturer part number on file: 190-1012 (American Couplings Co).
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-325-6366, 4730-01-577-4956. Verify interchangeability with system specifications before substitution.
Key specifications for 190-1012: Connection Style: BARBED OR BEADED (HOSE) SECOND END; Connection Style: PLAIN (HOSE) FIRST END; Nominal Inside Diameter Hose Accommodated: 0.625 INCHES SECOND END IN; Nominal Overall Length: 1.875 INCHES IN. 11 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.