The Reducer,tube, cataloged under National Stock Number 4730-00-065-2864, 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 Komatsu America Corp.. Government technical data includes 9 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-065-2864 |
| Primary Part Number | 278040R2 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Connection Style | STREAMLINED W/ TWO BRAZING RINGS (TUBE) FIRST END |
| Connection Style | PLAIN (TUBE) SECOND END |
| Tubing Wall Nominal Thickness for Which Designed | 0.063 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.057 INCHES FIRST END IN |
| Nominal Overall Length | 0.318 INCHES IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.330 INCHES SECOND END IN |
| Material | STEEL 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 |
|---|---|
| 278040R2 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 760FS(1/40D) | 5/9 Secondary reference Imperial |
| 278040R2 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 278040R2 | 5/9 Secondary reference U.S. Government activity |
| 125-3018 | 5/9 Secondary reference U.S. Government activity |
| 278040R2 | 3/9 Design control — primary reference Komatsu American Intl Co |
NSN 4730-00-065-2864 is a Reducer,tube, manufactured by Komatsu America Corp., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-065-2864 has 1 manufacturer part number on file: 278040R2 (Komatsu America Corp.).
Key specifications for 278040R2: Connection Style: STREAMLINED W/ TWO BRAZING RINGS (TUBE) FIRST END; Connection Style: PLAIN (TUBE) SECOND END; Tubing Wall Nominal Thickness for Which Designed: 0.063 INCHES SECOND END IN; Tubing Wall Nominal Thickness for Which Designed: 0.057 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.