The Gear,spur, cataloged under National Stock Number 3020-01-446-9173, 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 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-446-9173 |
| Primary Part Number | 65391-11329-101 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.240 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 3.621 INCHES BOTH ENDS IN |
| Teeth Quantity | 42 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 2.880 INCHES COUNTER BORE SECOND END IN |
| Bore Style | W/COUNTERBORE COUNTER BORE SECOND END |
| Bore Style | INVOLUTE SPLINE FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 1.940 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.952 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 4.9375 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 24 FIRST END |
| Nominal Outside Diameter | 5.498 INCHES IN |
| Pressure Angle | 22.5000 DEGREES |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 1.940 INCHES COUNTER BORE SECOND END IN |
| Spline Pitch Diameter | 2.4000 INCHES NOMINAL FIRST END IN |
| Face Nominal Width | 4.418 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 |
|---|---|
| 65391-11329-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 65391-11329 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 3020-01-446-9173 is a Gear,spur, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-446-9173 has 1 manufacturer part number on file: 65391-11329-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 65391-11329-101: Bore Nominal Diameter: 2.240 INCHES BOTH ENDS IN; Hub Nominal Diameter: 3.621 INCHES BOTH ENDS IN; Teeth Quantity: 42; Body Style: PLAIN, SOLID. 19 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 3020-01-446-9173 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.