The Gear Sector,worm Wheel, cataloged under National Stock Number 3020-01-340-5261, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-340-5261 |
| Item Name | Gear Sector,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Helix Angle | 3.1700 DEGREES |
| Teeth Quantity | 160 |
| Nominal Outside Radius | 159.0 MILLIMETERS MM |
| Tooth Direction | RIGHT |
| Throat Nominal Radius | 16.0 MILLIMETERS MM |
| Face Type | CONCAVE |
| Arc Nominal Length | 499.5 MILLIMETERS MM |
| Pitch Radius | 160.0 MILLIMETERS NOMINAL MM |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Mating Thread Lead Quantity | 1 |
| Face Nominal Width | 30.0 MILLIMETERS MM |
| 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 |
|---|---|
| 510252-3301.000 | 3/9 Design control — primary reference Recon/optical, Inc. |
| 510252-3301.000 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-340-5261 is a Gear Sector,worm Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-340-5261: Helix Angle: 3.1700 DEGREES; Teeth Quantity: 160; Nominal Outside Radius: 159.0 MILLIMETERS MM; Tooth Direction: RIGHT. 12 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.