The Gear,spur, cataloged under National Stock Number 3020-00-294-4774, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-294-4774 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.188 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.313 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.500 INCHES FIRST END IN |
| Teeth Quantity | 40 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.078 INCHES SECOND END IN |
| Hardness Rating | 60.0 ROCKWELL C MINIMUM AND 90.0 ROCKWELL C MAXIMUM HUB |
| Hardness Rating | 60.0 ROCKWELL C MINIMUM AND 90.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 0.500 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-B-895,1/2 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.8320 INCHES MINIMUM AND 0.8330 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 0.875 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Face Nominal Width | 0.156 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 |
|---|---|
| 972-230 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-294-4774 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-294-4774: Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.313 INCHES SECOND END IN; Hub Nominal Diameter: 0.500 INCHES FIRST END IN; Teeth Quantity: 40. 20 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.