The Gear,helical, cataloged under National Stock Number 3020-00-906-9888, 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 27 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-906-9888 |
| Primary Part Number | 141455-01 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Helix Angle | 3.0000 DEGREES |
| Teeth Quantity | 41 |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE HUB |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Nominal Distance Between Body Face and Protruding Hub End | 0.063 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.629 INCHES FIRST END IN |
| First Step Nominal Length | 0.063 INCHES SECOND END IN |
| First Step Nominal Length | 0.259 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | L-P-392 TYPE 1,CLASS 1 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | MIL-S-7720,COND A MIL SPEC SINGLE MATERIAL RESPONSE HUB |
| Pitch Diameter | 0.5702 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.250 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| End Nominal Length | 0.370 INCHES FIRST END IN |
| End Nominal Length | 0.167 INCHES SECOND END IN |
| Nominal Outside Diameter | 0.597 INCHES IN |
| Surface Treatment | PASSIVATE HUB |
| End Nominal Diameter | 0.125 INCHES SECOND END IN |
| End Nominal Diameter | 0.125 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | PLASTIC ACETAL BODY |
| Material | STEEL COMP 302 OR STEEL COMP 303 HUB |
| Face Nominal Width | 0.061 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 141455-01 PRIMARY | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 141455 | D/9 Drawing number reference only Ge Aviation Systems Llc |
NSN 3020-00-906-9888 is a Gear,helical, manufactured by Ge Aviation Systems Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-906-9888 has 1 manufacturer part number on file: 141455-01 (Ge Aviation Systems Llc).
Key specifications for 141455-01: Helix Angle: 3.0000 DEGREES; Teeth Quantity: 41; Surface Treatment Document and Classification: MIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE HUB; Body Style: PLAIN, SOLID. 27 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 3020-00-906-9888 has DEMIL Code Q. 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.