The Gear,helical, cataloged under National Stock Number 3020-01-062-4581, 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 Raytheon Company Dba Raytheon Co. Government technical data includes 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-062-4581 |
| Primary Part Number | 912114-1 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Keyway Nominal Width | 0.314 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 2.167 INCHES BOTH ENDS IN |
| Helix Angle | 15.1666 DEGREES |
| Hub Nominal Diameter | 3.125 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Recessed Hub End | 0.161 INCHES SECOND END IN |
| Teeth Quantity | 154 |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | WEBBED, OFFSET, WITH LIGHTENING HOLES |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.364 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 12 |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | ONE PROTRUDING HUB, ONE RECESSED HUB |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 9.9507 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 10.074 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.240 INCHES BOTH ENDS IN |
| Surface Treatment | OXIDE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4140 OVERALL |
| Face Nominal Width | 0.822 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-01-062-4581 is a Gear,helical, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-062-4581 has 2 manufacturer part numbers on file: 912114-1 (Raytheon Company), 912114-1 (Raytheon Company Dba Raytheon Co).
Key specifications for 912114-1: Keyway Nominal Width: 0.314 INCHES BOTH ENDS IN; Bore Nominal Diameter: 2.167 INCHES BOTH ENDS IN; Helix Angle: 15.1666 DEGREES; Hub Nominal Diameter: 3.125 INCHES FIRST END IN. 25 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.
NSN 3020-01-062-4581 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.