The Elbow,flange to Boss, cataloged under National Stock Number 4730-01-040-5899, 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 Defense. Government technical data includes 12 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 | 4730-01-040-5899 |
| Primary Part Number | 68A581258-1001 |
| Item Name | Elbow,flange to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flow Angle | 13.5 DEGREES |
| Flange Face Design | PLAIN FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | FLANGE FIRST END |
| Material Document and Classification | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE FLANGE |
| Bolt Hole Nominal Diameter | 0.281 INCHES FIRST END IN |
| Leg Length | 1.390 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.470 INCHES NOMINAL FIRST END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Surface Treatment | ANODIZE FLANGE |
| Material | ALUMINUM ALLOY 6061 FLANGE |
| Nominal Thickness | 0.156 INCHES FIRST 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 |
|---|---|
| 68A581258-1001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 4730-01-040-5899 is a Elbow,flange to Boss, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-040-5899 has 1 manufacturer part number on file: 68A581258-1001 (The Boeing Company Div Defense).
Key specifications for 68A581258-1001: Flow Angle: 13.5 DEGREES; Flange Face Design: PLAIN FIRST END; Connection Type: THREADED EXTERNAL BOSS SECOND END; Connection Type: FLANGE FIRST END. 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.
NSN 4730-01-040-5899 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.