The Gear,helical, cataloged under National Stock Number 3020-00-609-7129, 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 Cummins Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-609-7129 |
| Primary Part Number | 10198100 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.309 INCHES BOTH ENDS IN |
| Helix Angle | 18.0000 DEGREES |
| Backlash Designation | GRADE A |
| Teeth Quantity | 18 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 73.0 ROCKWELL C MINIMUM AND 75.0 ROCKWELL C MAXIMUM TEETH |
| Style Designator | HUBLESS |
| Pitch Diameter | 0.5900 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 0.651 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.498 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 |
|---|---|
| 10198100 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 101981 | 5/9 Secondary reference Cummins Inc. |
NSN 3020-00-609-7129 is a Gear,helical, manufactured by Cummins Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-609-7129 has 1 manufacturer part number on file: 10198100 (Cummins Inc.).
Key specifications for 10198100: Bore Nominal Diameter: 0.309 INCHES BOTH ENDS IN; Helix Angle: 18.0000 DEGREES; Backlash Designation: GRADE A; Teeth Quantity: 18. 16 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.