The Gear,helical, cataloged under National Stock Number 3020-00-424-8625, 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 Komatsu America Corp.. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-424-8625 |
| Primary Part Number | 8146DB |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.689 INCHES BOTH ENDS IN |
| Helix Angle | 39.4500 DEGREES |
| Hub Nominal Diameter | 3.313 INCHES BOTH ENDS IN |
| Nominal Distance Between Body Face and Recessed Hub End | 0.625 INCHES SECOND END IN |
| Teeth Quantity | 54 |
| Body Style | WEBBED, OFFSET, WITH LIGHTENING HOLES |
| Tooth Direction | LEFT |
| Bore Style | PLAIN BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | ONE FLUSH HUB, ONE RECESSED HUB |
| Pitch Diameter | 7.0234 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 7.221 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | IRON OVERALL |
| Face Nominal Width | 1.000 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 |
| Part Number | Manufacturer |
|---|---|
| 8146DB | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 8146DB | 3/9 Design control — primary reference Komatsu American Intl Co |
| 8146DB | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-424-8625 is a Gear,helical, manufactured by Komatsu America Corp., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-424-8625 has 1 manufacturer part number on file: 8146DB (Komatsu America Corp.).
Key specifications for 8146DB: Bore Nominal Diameter: 1.689 INCHES BOTH ENDS IN; Helix Angle: 39.4500 DEGREES; Hub Nominal Diameter: 3.313 INCHES BOTH ENDS IN; Nominal Distance Between Body Face and Recessed Hub End: 0.625 INCHES SECOND END IN. 17 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.