The Gear,worm Wheel, cataloged under National Stock Number 3020-01-442-2006, 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 Naval Sea Systems Command. Government technical data includes 28 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-442-2006 |
| Primary Part Number | 211070519 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.560 INCHES BOTH ENDS IN |
| Helix Angle | 18.4332 DEGREES |
| Teeth Quantity | 40 |
| Second Step Nominal Diameter | 3.500 INCHES FIRST END IN |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 4 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 2.203 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 3.557 INCHES FIRST END IN |
| First Step Nominal Length | 1.250 INCHES FIRST END IN |
| First Step Nominal Length | 0.372 INCHES SECOND END IN |
| Throat Nominal Radius | 0.842 INCHES IN |
| Face Type | CONCAVE |
| Mounting Hole Nominal Diameter | 1.120 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Second Step Nominal Length | 0.367 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 6.6670 INCHES NOMINAL IN |
| First Step Nominal Diameter | 3.500 INCHES SECOND END IN |
| First Step Nominal Diameter | 2.620 INCHES FIRST END IN |
| Hub Style Designator | 2 STEPS FIRST END |
| Hub Style Designator | 1 STEP SECOND END |
| End Nominal Length | 1.940 INCHES FIRST END IN |
| End Nominal Length | 1.811 INCHES SECOND END IN |
| Nominal Outside Diameter | 7.125 INCHES IN |
| End Nominal Diameter | 2.363 INCHES SECOND END IN |
| End Nominal Diameter | 2.488 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 211070519 PRIMARY | Naval Sea Systems Command (USA) |
| 581-6405750 AHWA FIND A8 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| DF2011-236 AHWA FIND A8 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 218001791 | 3/2 Design control — primary reference U.S. Government activity |
| C611-1403 AHWA FIND A8 | 5/2 Secondary reference U.S. Government activity |
| 6405750 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-442-2006 is a Gear,worm Wheel, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-442-2006 has 2 manufacturer part numbers on file: 211070519 (Naval Sea Systems Command), 581-6405750 AHWA FIND A8 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-443-7517, 3040-01-444-3989. Verify interchangeability with system specifications before substitution.
Key specifications for 211070519: Bore Nominal Diameter: 1.560 INCHES BOTH ENDS IN; Helix Angle: 18.4332 DEGREES; Teeth Quantity: 40; Second Step Nominal Diameter: 3.500 INCHES FIRST END IN. 28 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.