The Gear,spur, cataloged under National Stock Number 3020-01-129-5656, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-129-5656 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Nominal Width Across Flats | 0.500 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.750 INCHES BOTH ENDS IN |
| Teeth Quantity | 14 |
| Body Style | PLAIN, SOLID |
| Bore Style | HEX BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.094 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.125 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 1.4000 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 1.450 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | BRONZE OVERALL |
| Face Nominal Width | 0.281 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 |
|---|---|
| 139B-18B | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-129-5656 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-129-5656: Nominal Width Across Flats: 0.500 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.750 INCHES BOTH ENDS IN; Teeth Quantity: 14; Body Style: PLAIN, SOLID. 15 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.