The Gear,spur, cataloged under National Stock Number 3020-01-078-4617, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-078-4617 |
| Primary Part Number | 656485 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.125 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.188 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.188 INCHES BETWEEN BODY AND FLANGE IN |
| Teeth Quantity | 42 |
| Body Style | PLAIN, SOLID |
| Flange Nominal Thickness | 0.160 INCHES IN |
| Flange Nominal Diameter | 0.480 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Style Designator | FLANGED END |
| Material Document and Classification | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.4375 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Nominal Distance Between Outer Body Face and Inner Flange Face | 0.200 INCHES IN |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 0.458 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Face Nominal Width | 0.060 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 656485 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
NSN 3020-01-078-4617 is a Gear,spur, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-078-4617 has 1 manufacturer part number on file: 656485 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 656485: Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.188 INCHES FIRST END IN; Hub Nominal Diameter: 0.188 INCHES BETWEEN BODY AND FLANGE IN; Teeth Quantity: 42. 18 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.
NSN 3020-01-078-4617 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.