The Gear,spur, cataloged under National Stock Number 3020-01-045-3626, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-045-3626 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.752 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 3.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 6.000 INCHES FIRST END IN |
| Teeth Quantity | 39 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 4.120 INCHES SECOND END IN |
| Bore Style | W/COUNTERBORE SECOND END |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.380 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Pitch Diameter | 9.7500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 10.150 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.958 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.352 INCHES SECOND END IN |
| Body Recess Nominal Depth | 0.352 INCHES SECOND END IN |
| Face Nominal Width | 2.000 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 |
|---|---|
| CB71-42070-1 | 5/9 Secondary reference O'brien Gear Co |
| CB71-42070-1 | 3/9 Design control — primary reference U.S. Government activity |
| CB71-42002PC41 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-045-3626 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-045-3626: Keyway Nominal Width: 0.752 INCHES BOTH ENDS IN; Bore Nominal Diameter: 3.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 6.000 INCHES FIRST END IN; Teeth Quantity: 39. 20 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.