The Reducer,tube, cataloged under National Stock Number 4730-01-346-6236, 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 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-346-6236 |
| Primary Part Number | 6579649 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Nominal Overall Length | 0.800 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Material Document and Classification | QQ-S-764 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Nominal Thread Size | 1.188 INCHES SECOND END IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A SECOND END A |
| Material | STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Thread Series Designator | UNF 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 |
|---|---|
| 6579649 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4730-01-346-6236 is a Reducer,tube, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-346-6236 has 1 manufacturer part number on file: 6579649 (Naval Sea Systems Command).
Key specifications for 6579649: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: PLAIN (TUBE) SECOND END; Connection Style: SOCKET (TUBE) FIRST END; Nominal Overall Length: 0.800 INCHES IN. 15 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.