The Reducer,tube, cataloged under National Stock Number 4730-00-142-1203, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-142-1203 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | SOCKET BRAZING RING (TUBE) FIRST END |
| Connection Style | PLAIN (TUBE) SECOND END |
| Nominal Overall Length | 3.500 INCHES IN |
| Nominal Outside Diameter Tube Accommodated | 2.375 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 2.875 INCHES SECOND END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | COPPER ALLOY OVERALL |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE OD TUBE ON FIRST AND SECOND END AND W/PREINSERTED RING |
| 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 |
| Reference | Meaning |
|---|---|
| 5000S4823-841338PC7-9 | 5/9 Secondary reference Naval Sea Systems Command |
| 5000S4823-841338REV5PC7-9 | 5/9 Secondary reference U.S. Government activity |
| 810-1385951PC1-4 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 5000S4823-841338REV5PC7-8 | 5/9 Secondary reference U.S. Government activity |
| 5000S4823-841338PC7-8 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 4730-00-142-1203 is a Reducer,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4730-00-142-1204, 4730-00-142-1205, 4730-00-142-2924. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-142-1203: Connection Style: SOCKET BRAZING RING (TUBE) FIRST END; Connection Style: PLAIN (TUBE) SECOND END; Nominal Overall Length: 3.500 INCHES IN; Nominal Outside Diameter Tube Accommodated: 2.375 INCHES FIRST END IN. 9 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.