The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-166-9237, 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 The Boeing Company Div Legacy Am&m. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-166-9237 |
| Primary Part Number | L4801573-011 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flow Angle | 75.0 DEGREES |
| Flange Face Design | PLAIN WITH GASKET GROOVE SECOND END |
| Bolt Circle Nominal Diameter | 3.800 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.080 INCHES FIRST END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | MIL-A-21180 CLASS 11 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.010 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 2.100 INCHES FIRST END IN |
| Leg Length | 2.320 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.820 INCHES NOMINAL FIRST END IN |
| Nominal Outside Diameter | 4.060 INCHES SECOND END IN |
| Bolt Hole Quantity | 5 SECOND END |
| Nominal Thickness | 0.260 INCHES SECOND END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| L4801573-011 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 4730-01-166-9237 is a Elbow,flange to Tube, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-166-9237 has 1 manufacturer part number on file: L4801573-011 (The Boeing Company Div Legacy Am&m).
Key specifications for L4801573-011: Flange Shape: ROUND WITH HOLES SECOND END; Flow Angle: 75.0 DEGREES; Flange Face Design: PLAIN WITH GASKET GROOVE SECOND END; Bolt Circle Nominal Diameter: 3.800 INCHES SECOND END IN. 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.
NSN 4730-01-166-9237 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.