The Gear,helical, cataloged under National Stock Number 3020-01-092-8386, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-092-8386 |
| Primary Part Number | 9N1664 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Keyway Nominal Width | 0.131 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 3.720 INCHES BOTH ENDS IN |
| Teeth Quantity | 5 |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Style Designator | HUBLESS |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 4.3990 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.938 INCHES BOTH ENDS IN |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.055 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 |
|---|---|
| 9N1664 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| M-A129-20001 PRIMARY | Am General Llc (USA) |
| Reference | Meaning |
|---|---|
| 447728 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-092-8386 is a Gear,helical, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-092-8386 has 2 manufacturer part numbers on file: 9N1664 (Caterpillar Inc Div Caterpillar Defense), M-A129-20001 (Am General Llc).
Key specifications for 9N1664: Keyway Nominal Width: 0.131 INCHES BOTH ENDS IN; Bore Nominal Diameter: 3.720 INCHES BOTH ENDS IN; Teeth Quantity: 5; Bore Style: W/ KEYWAY BOTH ENDS. 10 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.