The Elbow,flange, cataloged under National Stock Number 4730-00-155-3666, 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 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-155-3666 |
| Item Name | Elbow,flange |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 6.000 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Material Document and Classification | ASTM B145 ALLOY 4B ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Leg Length | 5.500 INCHES NOMINAL ALL ENDS IN |
| Nominal Outside Diameter | 7.500 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Material | COPPER ALLOY OVERALL |
| Nominal Thickness | 0.625 INCHES ALL ENDS 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 |
|---|---|
| 707-12-3IN | 3/9 Design control — primary reference Nibco Inc |
| 1707-12-3IN | 5/9 Secondary reference Arco Metals Co Div of Atlantic Richfield Co |
| 11241296-1 | 5/9 Secondary reference Ballistic Missile Defense Systems Command |
NSN 4730-00-155-3666 is a Elbow,flange, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-155-3666: Flange Shape: ROUND WITH HOLES ALL ENDS; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 6.000 INCHES ALL ENDS IN. 12 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.