The Elbow,flange, cataloged under National Stock Number 4730-00-306-3797, 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 Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-306-3797 |
| Primary Part Number | 347231 |
| Item Name | Elbow,flange |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Nominal Length | 3.220 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST END |
| Material Document and Classification | MIL-T-8606 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.100 INCHES FIRST END IN |
| Nominal Outside Diameter | 2.192 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Nominal Width | 2.000 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.380 INCHES FIRST END IN |
| Material | STEEL OVERALL |
| Nominal Thickness | 0.125 INCHES FIRST END IN |
| 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 |
|---|---|
| 347231 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| 347231 | Lockheed Martin Aeroparts, Inc. Dba Lockheed Martin Aeroparts Inc (USA) |
| Reference | Meaning |
|---|---|
| 347231 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-306-3797 is a Elbow,flange, manufactured by Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-306-3797 has 2 manufacturer part numbers on file: 347231 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), 347231 (Lockheed Martin Aeroparts, Inc. Dba Lockheed Martin Aeroparts Inc).
Key specifications for 347231: Flange Shape: ROUND WITH HOLES SECOND END; Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Nominal Length: 3.220 INCHES FIRST END IN. 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.