The Gear Sector,spur, cataloged under National Stock Number 3020-00-239-8555, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-239-8555 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.245 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.312 INCHES BOTH ENDS IN |
| Teeth Quantity | 204 |
| Nominal Outside Radius | 2.145 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.280 INCHES SECOND END IN |
| Nominal Overall Length | 1.616 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Surface Treatment | PASSIVATE OVERALL |
| Pitch Radius | 2.0000 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Face Nominal Width | 0.457 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 |
| Reference | Meaning |
|---|---|
| 326-105877-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-239-8555 is a Gear Sector,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-239-8555: Bore Nominal Diameter: 2.245 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.312 INCHES BOTH ENDS IN; Teeth Quantity: 204; Nominal Outside Radius: 2.145 INCHES 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.