The Gear,spur, cataloged under National Stock Number 3020-00-288-4877, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-288-4877 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.096 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.3745 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.688 INCHES FIRST END IN |
| Teeth Quantity | 64 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.061 INCHES FIRST END IN |
| Hardness Rating | 33.0 ROCKWELL C NOMINAL OVERALL |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 0.061 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.2365 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4140 OVERALL |
| Face Nominal Width | 0.313 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 |
|---|---|
| 1533B21 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-288-4877 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-288-4877: Keyway Nominal Width: 0.096 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.3745 INCHES FIRST END IN; Hub Nominal Diameter: 0.688 INCHES FIRST END IN; Teeth Quantity: 64. 18 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.