The Gear Sector,worm Wheel, cataloged under National Stock Number 3020-01-121-2964, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-121-2964 |
| Item Name | Gear Sector,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.282 INCHES BOTH ENDS IN |
| Teeth Quantity | 40 |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Nominal Overall Length | 1.315 INCHES IN |
| Spline Quantity | 10 BOTH ENDS |
| Pitch Radius | 2.8050 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Face Nominal Width | 1.315 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 87692-1812 | D/9 Drawing number reference only U.S. Government activity |
| 711-4678214 ITEM 4 | 3/2 Design control — primary reference U.S. Government activity |
| 87692-1812 ITEM 4 | 3/2 Design control — primary reference U.S. Government activity |
| 711-4678214 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-121-2964 is a Gear Sector,worm Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-131-4948. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-121-2964: Bore Nominal Diameter: 1.282 INCHES BOTH ENDS IN; Teeth Quantity: 40; Bore Style: STRAIGHT SPLINE BOTH ENDS; Nominal Overall Length: 1.315 INCHES IN. 8 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.
NSN 3020-01-121-2964 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.