The Gear,spur, cataloged under National Stock Number 3020-01-077-2109, 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 Caterpillar Inc Div Caterpillar Defense. Government technical data includes 12 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 | 3020-01-077-2109 |
| Primary Part Number | 9N1402 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Bore Nominal Diameter | 3.1875 INCHES BOTH ENDS IN |
| Teeth Quantity | 36 |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Style Designator | HUBLESS |
| Tooth Form | SPECIAL |
| Features Provided | CASEHARDENED |
| Spline Quantity | 50 BOTH ENDS |
| Nominal Outside Diameter | 5.662 INCHES IN |
| Material | STEEL OVERALL |
| Spline Pitch Diameter | 3.1250 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.165 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 |
| Part Number | Manufacturer |
|---|---|
| 9N1402 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 3020-01-077-2109 is a Gear,spur, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-077-2109 has 1 manufacturer part number on file: 9N1402 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 9N1402: Bore Nominal Diameter: 3.1875 INCHES BOTH ENDS IN; Teeth Quantity: 36; Body Style: PLAIN, SOLID; Bore Style: INVOLUTE SPLINE BOTH ENDS. 12 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.