The Gear,spur, cataloged under National Stock Number 3020-00-121-9633, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-121-9633 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.625 INCHES BOTH ENDS IN |
| Teeth Quantity | 28 |
| Surface Treatment Document and Classification | AMS2406 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.448 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.554 INCHES FIRST END IN |
| First Step Nominal Length | 0.121 INCHES SECOND END IN |
| First Step Nominal Length | 0.181 INCHES FIRST END IN |
| Nominal Overall Length | 1.722 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.3394 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.892 INCHES BOTH ENDS IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| End Nominal Length | 0.373 INCHES FIRST END IN |
| End Nominal Length | 0.365 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.430 INCHES IN |
| Surface Treatment | CHROMIUM OVERALL |
| End Nominal Diameter | 0.787 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Face Nominal Width | 0.680 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 |
|---|---|
| 698471-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-121-9633 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-121-9633: Bore Nominal Diameter: 0.625 INCHES BOTH ENDS IN; Teeth Quantity: 28; Surface Treatment Document and Classification: AMS2406 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Body Style: PLAIN, SOLID. 24 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.