The Gear,spur, cataloged under National Stock Number 3020-01-170-2563, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-170-2563 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.999 INCHES SECOND END IN |
| Teeth Quantity | 32 |
| Second Step Nominal Diameter | 2.365 INCHES FIRST END IN |
| Body Style | PLAIN, SOLID |
| Bore Style | SQUARE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.690 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 2.940 INCHES FIRST END IN |
| First Step Nominal Length | 1.020 INCHES FIRST END IN |
| Second Step Nominal Length | 0.360 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 4.0000 INCHES NOMINAL IN |
| Tooth Form | STUB |
| First Step Nominal Diameter | 0.781 INCHES FIRST END IN |
| Bore Nominal Width | 4.750 INCHES BOTH ENDS IN |
| Hub Style Designator | 2 STEPS FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| End Nominal Length | 1.560 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.200 INCHES IN |
| End Nominal Diameter | 0.625 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.120 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 |
|---|---|
| 845-4687729 | D/9 Drawing number reference only U.S. Government activity |
| 2641-792-04 ITEM 6 | 3/2 Design control — primary reference U.S. Government activity |
| 2641-792-04 | D/9 Drawing number reference only U.S. Government activity |
| 845-4687729 ITEM 6 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-170-2563 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-170-2563: Hub Nominal Diameter: 0.999 INCHES SECOND END IN; Teeth Quantity: 32; Second Step Nominal Diameter: 2.365 INCHES FIRST END IN; Body Style: PLAIN, SOLID. 22 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.