The Gear,spur, cataloged under National Stock Number 3020-00-646-7992, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-646-7992 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Teeth Quantity | 120 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 3 PLAIN AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.156 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.094 INCHES SECOND END IN |
| First Step Nominal Length | 0.063 INCHES SECOND END IN |
| First Step Nominal Length | 0.094 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.128 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Overall Length | 0.625 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 3.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.312 INCHES FIRST END IN |
| First Step Nominal Diameter | 1.336 INCHES SECOND END IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| End Nominal Length | 0.031 INCHES SECOND END IN |
| End Nominal Length | 0.063 INCHES FIRST END IN |
| Nominal Outside Diameter | 3.050 INCHES IN |
| Surface Treatment | LACQUER BODY |
| End Nominal Diameter | 0.500 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | PLASTIC PHENOLIC BODY |
| Bolt Hole Circle Nominal Diameter | 2.000 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.375 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 |
| Reference | Meaning |
|---|---|
| 820464 | 5/9 Secondary reference Profile Gear Corp |
| 820464 | 3/9 Design control — primary reference L3 Aviation Products, Inc. Dba L3 Technologies |
NSN 3020-00-646-7992 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-646-7992: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Teeth Quantity: 120; Body Style: PLAIN, SOLID; Bore Style: PLAIN BOTH ENDS. 27 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.