The Gear,spur, cataloged under National Stock Number 3020-00-705-1663, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-705-1663 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.0460 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.1250 INCHES SECOND END IN |
| Teeth Quantity | 240 |
| Body Style | PLAIN, SOLID |
| Bore Style | TAPERED W/KEYWAY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.3440 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.0620 INCHES SECOND END IN |
| First Step Nominal Length | 0.0250 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Style Designator | PROTRUDING HUBS |
| Taper Major Nominal Diameter | 0.3595 INCHES FIRST END IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE HUB |
| Material Document and Classification | MIL-B-994-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE TEETH |
| Pitch Diameter | 5.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.8750 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| End Nominal Length | 0.3140 INCHES FIRST END IN |
| Nominal Outside Diameter | 5.0417 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.2255 INCHES FIRST END IN |
| Surface Treatment | PASSIVATE HUB |
| End Nominal Diameter | 0.6250 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY TEETH |
| Material | STEEL COMP 304 HUB |
| Face Nominal Width | 0.1200 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 |
|---|---|
| C311-279 | 5/9 Secondary reference U.S. Government activity |
| C311-279 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-705-1663 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-705-1663: Keyway Nominal Width: 0.0460 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.1250 INCHES SECOND END IN; Teeth Quantity: 240; Body Style: PLAIN, SOLID. 27 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.