The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-221-1928, 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15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-221-1928 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Recess Nominal Depth | 0.160 INCHES SECOND END IN |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flow Angle | 100.0 DEGREES |
| Flange Face Design | RECESSED STRAIGHT SECOND END |
| Connection Style | PLAIN (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.620 INCHES FIRST END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter | 2.300 INCHES SECOND END IN |
| Bolt Hole Quantity | 8 FIRST END |
| Media for Which Designed | WASTE PRODUCT SINGLE RESPONSE |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Nominal Thickness | 0.050 INCHES SECOND END IN |
| Recess Nominal Diameter | 1.000 INCHES SECOND 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 |
| Reference | Meaning |
|---|---|
| 4F09040-115A | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-221-1928 is a Elbow,flange to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-221-1928: Recess Nominal Depth: 0.160 INCHES SECOND END IN; Flange Shape: ROUND WITH HOLES FIRST END; Flow Angle: 100.0 DEGREES; Flange Face Design: RECESSED STRAIGHT 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.