The Flange,pipe, cataloged under National Stock Number 4730-01-259-7279, 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 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-259-7279 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 2.062 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Tube Outside Diameter for Which Designed | 1.231 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE |
| Style Designator | ROUND, NO BOLT HOLES |
| Material Document and Classification | QQ-B-626,COMP 22 FED SPEC SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 1.250 INCHES IN |
| Screw Thread Series Designator | UN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | COPPER ALLOY |
| Thickness | 0.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 600154 | 5/9 Secondary reference Sabre Industries Inc |
| 600154 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-259-7279 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-340-0478. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-259-7279: Flange Diameter: 2.062 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Tube Outside Diameter for Which Designed: 1.231 INCHES NOMINAL IN; Flange Section Style: PLAIN FACE. 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.