The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-320-1642, 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 16 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-320-1642 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | SOCKET W/ GROVE (TUBE) FIRST END |
| Bolt Circle Nominal Diameter | 6.562 INCHES SECOND END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-C-390,ALLOYD5,TY1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.688 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 4.693 INCHES FIRST END IN |
| Leg Length | 4.840 INCHES NOMINAL FIRST END IN |
| Leg Length | 5.060 INCHES NOMINAL SECOND END IN |
| Nominal Outside Diameter | 7.690 INCHES SECOND END IN |
| Bolt Hole Quantity | 8 SECOND END |
| Material | COPPER ALLOY OVERALL |
| Nominal Thickness | 1.060 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 |
|---|---|
| 704-4685319 ITEM F30 | 5/2 Secondary reference U.S. Government activity |
| 704-4685319 ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 704-4685319 | D/9 Drawing number reference only U.S. Government activity |
| 2621-166-03 PC219 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-166-03 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-320-1642 is a Elbow,flange to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-320-1642: Flange Shape: ROUND WITH HOLES SECOND END; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN SECOND END; Connection Style: SOCKET W/ GROVE (TUBE) FIRST END. 16 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.