The Gear,spur, cataloged under National Stock Number 3020-01-202-0484, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-202-0484 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES FIRST END IN |
| Bore Nominal Diameter | 0.124 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.312 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.473 INCHES FIRST END IN |
| Teeth Quantity | 90 |
| Surface Treatment Document and Classification | MIL-S-171 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.235 INCHES FIRST END IN |
| Bore Style | PLAIN SECOND END |
| Bore Style | W/COUNTERBORE FIRST END |
| Mounting Hole Type and Quantity | 4 THREADED TRANSVERSELY THROUGH HUB SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.192 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.273 INCHES SECOND END IN |
| Nominal Overall Length | 0.5250 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.9375 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PINNED SECOND END |
| Hub Style Designator | PLAIN FIRST END |
| Mounting Hole Nominal Thread Size | 2.000 INCHES TRANSVERSELY THROUGH HUB SECOND END IN |
| Nominal Outside Diameter | 0.905 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Counterbore Nominal Depth | 0.192 INCHES FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB SECOND END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.060 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 |
|---|---|
| 153C5809P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-202-0484 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-202-0484: Bore Nominal Diameter: 0.187 INCHES FIRST END IN; Bore Nominal Diameter: 0.124 INCHES SECOND END IN; Hub Nominal Diameter: 0.312 INCHES SECOND END IN; Hub Nominal Diameter: 0.473 INCHES FIRST END IN. 29 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.