The Gear Sector,spur, cataloged under National Stock Number 3020-00-152-7973, 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 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 3020-00-152-7973 |
| Primary Part Number | 654729 |
| 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 |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.438 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.406 INCHES FIRST END IN |
| Teeth Quantity | 22 |
| Nominal Outside Radius | 1.053 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.085 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.034 INCHES SECOND END IN |
| Nominal Overall Length | 0.281 INCHES IN |
| Style Designator | SIDE FACE, PROTRUDING HUBS |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Arc Nominal Length | 2.164 INCHES IN |
| Pitch Radius | 1.0312 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Face Nominal Width | 0.094 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 |
NSN 3020-00-152-7973 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 3020-00-152-7973 has 2 manufacturer part numbers on file: 654729 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 265526 (Lockheed Martin Corporation Div Rms - Mitchel Field).
2 possible matches (shared part number, not a government interchangeability claim): 2840-00-323-6563, 5962-01-381-5575. Verify interchangeability with system specifications before substitution.
Key specifications for 654729: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.438 INCHES SECOND END IN; Hub Nominal Diameter: 0.406 INCHES FIRST END IN; Teeth Quantity: 22. 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.