The Gear,helical, cataloged under National Stock Number 3020-00-147-1783, 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 Lockheed Martin Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-147-1783 |
| Primary Part Number | 898461 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 SETSCREW |
| Bore Nominal Diameter | 0.1250 INCHES BOTH ENDS IN |
| Helix Angle | 9.0000 DEGREES |
| Teeth Quantity | 40 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.065 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.210 INCHES FIRST END IN |
| First Step Nominal Length | 0.025 INCHES FIRST END IN |
| First Step Nominal Length | 0.040 INCHES SECOND END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 1.0144 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.625 INCHES SECOND END IN |
| First Step Nominal Diameter | 0.630 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Mounting Hole Nominal Thread Size | 0.086 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| End Nominal Length | 0.185 INCHES FIRST END IN |
| End Nominal Length | 0.025 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.0650 INCHES IN |
| End Nominal Diameter | 0.312 INCHES FIRST END IN |
| End Nominal Diameter | 0.265 INCHES SECOND END IN |
| Pressure Angle | 6.0000 DEGREES |
| Material | PLASTIC OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.089 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 |
|---|---|
| 898461 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 898461 | 5/9 Secondary reference L3 Aviation Products, Inc. Dba L3 Technologies |
NSN 3020-00-147-1783 is a Gear,helical, manufactured by Lockheed Martin Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-147-1783 has 1 manufacturer part number on file: 898461 (Lockheed Martin Corporation).
Key specifications for 898461: Furnished Items and Quantity: 1 SETSCREW; Bore Nominal Diameter: 0.1250 INCHES BOTH ENDS IN; Helix Angle: 9.0000 DEGREES; Teeth Quantity: 40. 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.