The Reducer,pipe, cataloged under National Stock Number 4730-01-329-1284, 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 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-329-1284 |
| Primary Part Number | 6559060 ITEM F26 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.000 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.250 INCHES FIRST END IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 2.500 INCHES IN |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED EXTERNAL PIPE SECOND END |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 5100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE 80 SECOND END |
| Material | STEEL COMP 304 OVERALL |
| 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 |
|---|---|
| 6559060 ITEM F26 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2621-062-01 | D/9 Drawing number reference only U.S. Government activity |
| 16-97-0121 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-062-01 PC-33 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-329-1284 is a Reducer,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-329-1284 has 1 manufacturer part number on file: 6559060 ITEM F26 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-716-1519. Verify interchangeability with system specifications before substitution.
Key specifications for 6559060 ITEM F26: Nominal Pipe Size Accommodated: 1.000 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 12 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.