The Gear,bevel, cataloged under National Stock Number 3020-01-288-0839, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Boeing Company. Government technical data includes 8 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-288-0839 |
| Primary Part Number | 7-211330021-5 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.575 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.780 INCHES SECOND END IN |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Overall Length | 5.880 INCHES IN |
| Bore Nominal Depth | 2.502 INCHES FIRST END IN |
| Nominal Outside Diameter | 7.550 INCHES IN |
| Face Nominal Width | 1.200 INCHES 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 | F |
| Part Number | Manufacturer |
|---|---|
| 7-211330021-5 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-211330021-3 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 7-211330021-5 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 7-211330021-5 | 5/9 Secondary reference U.S. Government activity |
| 7-211330021-5 | 5/9 Secondary reference Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc |
| 7-211330021-5 | 5/9 Secondary reference Triumph Fabrication - Orangeburg |
| 7-211330021 | D/9 Drawing number reference only Mcdonnell Douglas Helicopter Co Inc |
NSN 3020-01-288-0839 is a Gear,bevel, manufactured by The Boeing Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-288-0839 has 1 manufacturer part number on file: 7-211330021-5 (The Boeing Company).
Key specifications for 7-211330021-5: Bore Nominal Diameter: 1.575 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.780 INCHES SECOND END IN; Body Style: PLAIN, SOLID; Bore Style: PLAIN BOTH ENDS. 8 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 3020-01-288-0839 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.