The Flange,pipe, cataloged under National Stock Number 4730-00-815-7974, 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 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-815-7974 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.500 INCHES IN |
| Surface Treatment Document and Classification | QQ-A-591 FED SPEC SINGLE TREATMENT RESPONSE |
| Flange Section Style | RAISED FACE (BLIND) |
| Style Designator | SQUARE, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.281 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-591 FED SPEC SINGLE MATERIAL RESPONSE |
| Bolt Hole Quantity | 4 |
| Raised Face Height | 0.410 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Flange Width | 2.680 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Thickness | 0.200 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 |
|---|---|
| 3-52033-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 3-52033-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 4730-00-815-7974 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): 5935-01-706-5544. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-815-7974: Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 1.500 INCHES IN; Surface Treatment Document and Classification: QQ-A-591 FED SPEC SINGLE TREATMENT RESPONSE; Flange Section Style: RAISED FACE (BLIND). 13 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.