The Gear,helical, cataloged under National Stock Number 3020-01-018-1665, 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 Chase International (contract Services) Ltd. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-018-1665 |
| Primary Part Number | 354-10711 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Chase International (contract Services) Ltd |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.6830 INCHES BOTH ENDS IN |
| Helix Angle | 17.0000 DEGREES |
| Teeth Quantity | 30 |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS, RECESSED BODY |
| Pitch Diameter | 3.9500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 4.2320 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| Body Recess Nominal Depth | 0.375 INCHES FIRST END IN |
| Face Nominal Width | 1.000 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 |
|---|---|
| 354-10711 | Chase International (contract Services) Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 354-10711 | 3/9 Design control — primary reference Astec America Inc. |
NSN 3020-01-018-1665 is a Gear,helical, manufactured by Chase International (contract Services) Ltd, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-018-1665 has 1 manufacturer part number on file: 354-10711 (Chase International (contract Services) Ltd).
Key specifications for 354-10711: Bore Nominal Diameter: 1.6830 INCHES BOTH ENDS IN; Helix Angle: 17.0000 DEGREES; Teeth Quantity: 30; Body Style: WEBBED, WITH LIGHTENING HOLES. 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.