The Gear,spur, cataloged under National Stock Number 3020-01-085-0359, 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29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-085-0359 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.127 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.629 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.375 INCHES FIRST END IN |
| Teeth Quantity | 228 |
| Second Step Nominal Diameter | 0.225 INCHES SECOND END IN |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Mounting Hole Type and Quantity | 3 PLAIN TRANSVERSELY THROUGH FACE |
| Nominal Distance Between Body Face and Protruding Hub End | 0.225 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.015 INCHES SECOND END IN |
| First Step Nominal Length | 0.156 INCHES SECOND END IN |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| Mounting Hole Nominal Diameter | 0.250 INCHES TRANSVERSELY THROUGH FACE IN |
| Nominal Overall Length | 0.790 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.6200 INCHES NOMINAL IN |
| Tooth Form | STUB |
| First Step Nominal Diameter | 1.880 INCHES SECOND END IN |
| Hub Style Designator | PLAIN FIRST END |
| Hub Style Designator | 1 STEP SECOND END |
| End Nominal Length | 0.156 INCHES SECOND END IN |
| Nominal Outside Diameter | 4.791 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.285 INCHES BOTH ENDS IN |
| End Nominal Diameter | 0.624 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.750 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 |
|---|---|
| 7820756-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-085-0359 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-085-0359: Keyway Nominal Width: 0.127 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.629 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.375 INCHES FIRST END IN; Teeth Quantity: 228. 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.