The Gear,spur, cataloged under National Stock Number 3020-01-031-9391, 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 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-031-9391 |
| Primary Part Number | 7G2485 |
| 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 | 1.109 INCHES BOTH ENDS IN |
| Teeth Quantity | 20 |
| Bore Style | PLAIN BOTH ENDS |
| Style Designator | HUBLESS |
| Tooth Form | SPECIAL |
| Nominal Outside Diameter | 1.918 INCHES IN |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.455 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 |
|---|---|
| 11634508 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 7G2485 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 4M8747 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| 102666 | 5/9 Secondary reference Mil-Tech Mfg Inc |
NSN 3020-01-031-9391 is a Gear,spur, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-031-9391 has 2 manufacturer part numbers on file: 11634508 (U S Army Tank Automotive Command Amsta-Im-Mm), 7G2485 (Caterpillar Inc Div Caterpillar Defense).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-688-6621. Verify interchangeability with system specifications before substitution.
Key specifications for 7G2485: Bore Nominal Diameter: 1.109 INCHES BOTH ENDS IN; Teeth Quantity: 20; Bore Style: PLAIN BOTH ENDS; Style Designator: HUBLESS. 8 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.