The Gear,spur, cataloged under National Stock Number 3020-00-684-1701, 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 Heligear Acquisition Co. Dba Northstar Aerospace, Inc.. Government technical data includes 17 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 | 3020-00-684-1701 |
| Primary Part Number | 419009 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.005 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.375 INCHES SECOND END IN |
| Hub Nominal Diameter | 1.375 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Recessed Hub End | 0.121 INCHES BOTH ENDS IN |
| Teeth Quantity | 104 |
| Body Style | WEBBED, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | RECESSED HUBS |
| Material Document and Classification | AMS 5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 3.313 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 416SE OVERALL |
| Face Nominal Width | 0.470 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 |
|---|---|
| 419009 PRIMARY | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. (USA) |
NSN 3020-00-684-1701 is a Gear,spur, manufactured by Heligear Acquisition Co. Dba Northstar Aerospace, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-684-1701 has 1 manufacturer part number on file: 419009 (Heligear Acquisition Co. Dba Northstar Aerospace, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-064-6831. Verify interchangeability with system specifications before substitution.
Key specifications for 419009: Bore Nominal Diameter: 1.005 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.375 INCHES SECOND END IN; Hub Nominal Diameter: 1.375 INCHES FIRST END IN; Nominal Distance Between Body Face and Recessed Hub End: 0.121 INCHES BOTH ENDS IN. 17 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.