The Gear Sector,spur, cataloged under National Stock Number 3020-00-249-7019, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 14 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 | 3020-00-249-7019 |
| Primary Part Number | 2523818 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Hub Nominal Diameter | 3.625 INCHES BOTH ENDS IN |
| Teeth Quantity | 88 |
| Nominal Outside Radius | 10.125 INCHES IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.937 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.938 INCHES SECOND END IN |
| Hardness Rating | 90.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 94.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM BODY |
| Style Designator | PROTRUDING HUBS |
| Hub Style Designator | PINNED SECOND END |
| Hub Style Designator | PINNED FIRST END |
| Arc Nominal Length | 20.250 INCHES IN |
| Pitch Radius | 10.0000 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.750 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 |
|---|---|
| 2523818 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-249-7019 is a Gear Sector,spur, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-249-7019 has 1 manufacturer part number on file: 2523818 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-156-9649. Verify interchangeability with system specifications before substitution.
Key specifications for 2523818: Hub Nominal Diameter: 3.625 INCHES BOTH ENDS IN; Teeth Quantity: 88; Nominal Outside Radius: 10.125 INCHES IN; Nominal Distance Between Body Face and Protruding Hub End: 0.937 INCHES FIRST END IN. 14 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.