The Elbow,tube, cataloged under National Stock Number 4730-00-690-2011, 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 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-690-2011 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | SOCKET (TUBE) SECOND END |
| Connection Style | GASKET SEAL (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.083 INCHES FIRST END IN |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-601 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.875 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 3.000 INCHES FIRST END IN |
| Leg Length | 2.000 INCHES NOMINAL FIRST END IN |
| Leg Length | 2.040 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 3.500 INCHES FIRST END IN |
| Thread Class | 3B FIRST END |
| Thread Quantity Per Inch | 16 FIRST END |
| Material | ALUMINUM ALLOY 356.0 OVERALL |
| Thread Series Designator | UN FIRST END |
| 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 |
|---|---|
| 2-469-26 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-690-2011 is a Elbow,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-178-1987. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-690-2011: Connection Style: SOCKET (TUBE) SECOND END; Connection Style: GASKET SEAL (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.083 INCHES FIRST END IN; Connection Type: UNTHREADED INTERNAL TUBE SECOND END. 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.