The Gear,helical, cataloged under National Stock Number 3020-01-034-2125, 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 Western Sky Industries Inc Dba Electromech Techologies. Government technical data includes 15 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-034-2125 |
| Primary Part Number | D2-1271 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Western Sky Industries Inc Dba Electromech Techologies |
| Status | ACTIVE |
| Helix Angle | 11.0000 DEGREES |
| Hub Nominal Diameter | 0.500 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.500 INCHES FIRST END IN |
| Teeth Quantity | 10 |
| Body Style | PLAIN, SOLID |
| Nominal Distance Between Body Face and Protruding Hub End | 0.750 INCHES BOTH ENDS IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 1.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 1.1250 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.375 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 |
|---|---|
| D2-1271 PRIMARY | Western Sky Industries Inc Dba Electromech Techologies (USA) |
NSN 3020-01-034-2125 is a Gear,helical, manufactured by Western Sky Industries Inc Dba Electromech Techologies, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-034-2125 has 1 manufacturer part number on file: D2-1271 (Western Sky Industries Inc Dba Electromech Techologies).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-682-0393. Verify interchangeability with system specifications before substitution.
Key specifications for D2-1271: Helix Angle: 11.0000 DEGREES; Hub Nominal Diameter: 0.500 INCHES SECOND END IN; Hub Nominal Diameter: 0.500 INCHES FIRST END IN; Teeth Quantity: 10. 15 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.