The Gear,bevel, cataloged under National Stock Number 3020-00-517-4580, 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 16 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-517-4580 |
| Primary Part Number | 637571 |
| Item Name | Gear,bevel |
| 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 |
| Bore Nominal Diameter | 0.313 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.563 INCHES FIRST END IN |
| Teeth Quantity | 30 |
| Body Style | PLAIN, SOLID |
| Pitch Angle | 45.0000 DEGREES |
| Bore Style | PLAIN BOTH ENDS |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 0.469 INCHES IN |
| Style Designator | PERIPHERAL FACE, FRONT HUB PROTRUDING |
| Material Document and Classification | QQ-A-225/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.2500 INCHES NOMINAL IN |
| Hub Style Designator | PINNED SECOND END |
| Nominal Outside Diameter | 1.3100 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 2017 OVERALL |
| Face Nominal Width | 0.250 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 |
|---|---|
| 637571 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-517-4580 is a Gear,bevel, 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 3020-00-517-4580 has 1 manufacturer part number on file: 637571 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
3 possible matches (shared part number, not a government interchangeability claim): 5950-00-867-1310, 5950-00-888-3274, 5950-01-192-3171. Verify interchangeability with system specifications before substitution.
Key specifications for 637571: Bore Nominal Diameter: 0.313 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.563 INCHES FIRST END IN; Teeth Quantity: 30; Body Style: PLAIN, SOLID. 16 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.