The Gear,spur, cataloged under National Stock Number 3020-00-646-7995, 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 23 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 | 3020-00-646-7995 |
| Primary Part Number | 820488 |
| 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 COUNTER BORE SECOND END IN |
| Hub Nominal Diameter | 0.0625 INCHES COUNTER BORE SECOND END IN |
| Hub Nominal Diameter | 1.3750 INCHES FIRST END IN |
| Teeth Quantity | 101 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.5312 INCHES COUNTER BORE SECOND END IN |
| Bore Style | W/COUNTERBORE COUNTER BORE SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.1110 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.6560 INCHES FIRST END IN |
| First Step Nominal Length | 0.0850 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 2.5250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.3125 INCHES SECOND END IN |
| Hub Style Designator | 1 STEP SECOND END |
| Hub Style Designator | PINNED FIRST END |
| End Nominal Length | 0.0260 INCHES SECOND END IN |
| Nominal Outside Diameter | 2.575 INCHES IN |
| End Nominal Diameter | 0.6660 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | PLASTIC OVERALL |
| Counterbore Nominal Depth | 0.063 INCHES COUNTER BORE SECOND END IN |
| Face Nominal Width | 0.3750 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 |
|---|---|
| 820488 PRIMARY | L3 Aviation Products, Inc. Dba L3 Technologies (USA) |
NSN 3020-00-646-7995 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 3020-00-646-7995 has 1 manufacturer part number on file: 820488 (L3 Aviation Products, Inc. Dba L3 Technologies).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-646-8500. Verify interchangeability with system specifications before substitution.
Key specifications for 820488: Bore Nominal Diameter: 0.375 INCHES COUNTER BORE SECOND END IN; Hub Nominal Diameter: 0.0625 INCHES COUNTER BORE SECOND END IN; Hub Nominal Diameter: 1.3750 INCHES FIRST END IN; Teeth Quantity: 101. 23 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.