The Gear,worm Wheel, cataloged under National Stock Number 3020-01-010-3664, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-010-3664 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 3.750 INCHES BOTH ENDS IN |
| Helix Angle | 4.7667 DEGREES |
| Teeth Quantity | 32 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | LEFT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 8 PLAIN AXIALLY THROUGH BODY FIRST END |
| Throat Nominal Radius | 2.000 INCHES IN |
| Mounting Hole Nominal Diameter | 0.500 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | HUBLESS, RECESSED BODY |
| Pitch Diameter | 8.0000 INCHES NOMINAL IN |
| Nominal Outside Diameter | 8.4375 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Bolt Hole Circle Nominal Diameter | 4.875 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Mating Thread Lead Quantity | 1 |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.906 INCHES SECOND END IN |
| Body Recess Nominal Depth | 0.500 INCHES FIRST END IN |
| Face Nominal Width | 1.688 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 |
|---|---|
| 300054 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-01-010-3664 is a Gear,worm Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-412-0881, 6510-01-695-5824. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-010-3664: Bore Nominal Diameter: 3.750 INCHES BOTH ENDS IN; Helix Angle: 4.7667 DEGREES; Teeth Quantity: 32; Body Style: WEBBED, OFFSET, SOLID. 20 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.