The Gear,helical, cataloged under National Stock Number 3020-00-902-4219, 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 Ge Aviation Systems Llc. Government technical data includes 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-902-4219 |
| Primary Part Number | 141454-02 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.122 INCHES BOTH ENDS IN |
| Helix Angle | 3.0000 DEGREES |
| Hub Nominal Diameter | 0.225 INCHES SECOND END IN |
| Teeth Quantity | 77 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.172 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.015 INCHES SECOND END IN |
| First Step Nominal Length | 0.032 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 0.250 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Bore Nominal Depth | 0.250 INCHES BOTH ENDS IN |
| Material Document and Classification | MIL-S-7720,COND A MIL SPEC ALL MATERIAL RESPONSES HUB |
| Pitch Diameter | 0.8032 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.350 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| End Nominal Length | 0.140 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.823 INCHES IN |
| Surface Treatment | PASSIVATE HUB |
| End Nominal Diameter | 0.186 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | RUBBER BODY |
| Material | STEEL COMP 303 OR STEEL COMP 302 HUB |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.061 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 |
|---|---|
| 141454-02 PRIMARY | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 141454 | D/9 Drawing number reference only Ge Aviation Systems Llc |
NSN 3020-00-902-4219 is a Gear,helical, manufactured by Ge Aviation Systems Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-902-4219 has 1 manufacturer part number on file: 141454-02 (Ge Aviation Systems Llc).
2 possible matches (shared part number, not a government interchangeability claim): 3020-00-902-4222, 6130-01-241-5254. Verify interchangeability with system specifications before substitution.
Key specifications for 141454-02: Bore Nominal Diameter: 0.122 INCHES BOTH ENDS IN; Helix Angle: 3.0000 DEGREES; Hub Nominal Diameter: 0.225 INCHES SECOND END IN; Teeth Quantity: 77. 30 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.