The Gear,spur, cataloged under National Stock Number 3020-00-646-7937, 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 L3 Aviation Products, Inc. Dba L3 Technologies. Government technical data includes 17 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-646-7937 |
| Primary Part Number | 820463 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3 Aviation Products, Inc. Dba L3 Technologies |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.375 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.6250 INCHES FIRST END IN |
| Teeth Quantity | 36 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 0.7500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | 1 GROOVE FIRST END |
| Nominal Outside Diameter | 0.7917 INCHES IN |
| Nominal Distance From End to First Groove | 0.4700 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| First Groove Nominal Diameter | 0.6000 INCHES FIRST END IN |
| First Groove Nominal Width | 0.030 INCHES FIRST END IN |
| Face Nominal Width | 0.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 820463 PRIMARY | L3 Aviation Products, Inc. Dba L3 Technologies (USA) |
NSN 3020-00-646-7937 is a Gear,spur, manufactured by L3 Aviation Products, Inc. Dba L3 Technologies, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-646-7937 has 1 manufacturer part number on file: 820463 (L3 Aviation Products, Inc. Dba L3 Technologies).
1 possible match (shared part number, not a government interchangeability claim): 4910-01-187-0387. Verify interchangeability with system specifications before substitution.
Key specifications for 820463: Bore Nominal Diameter: 0.375 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.6250 INCHES FIRST END IN; Teeth Quantity: 36; Body Style: PLAIN, SOLID. 17 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.