The Gear,helical, cataloged under National Stock Number 3020-00-820-7914, 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 22 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-820-7914 |
| Primary Part Number | 12193300 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Keyway Nominal Width | 0.314 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.565 INCHES BOTH ENDS IN |
| Helix Angle | 22.6195 DEGREES |
| Hub Nominal Diameter | 2.281 INCHES SECOND END IN |
| Hub Nominal Diameter | 2.734 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Recessed Hub End | 0.380 INCHES SECOND END IN |
| Teeth Quantity | 36 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.378 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | ONE PROTRUDING HUB, ONE RECESSED HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4340H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 5.133 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.935 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4340H OVERALL |
| Face Nominal Width | 1.253 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 |
|---|---|
| 12193300 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 121933 | 5/9 Secondary reference Cummins Inc. |
| 121933 | 5/9 Secondary reference Spalla Inc |
| 2207-367 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-820-7914 is a Gear,helical, manufactured by Cummins Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-820-7914 has 1 manufacturer part number on file: 12193300 (Cummins Inc.).
Key specifications for 12193300: Keyway Nominal Width: 0.314 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.565 INCHES BOTH ENDS IN; Helix Angle: 22.6195 DEGREES; Hub Nominal Diameter: 2.281 INCHES SECOND END IN. 22 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.