The Gear,worm Wheel, cataloged under National Stock Number 3020-00-004-8166, 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20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-004-8166 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.312 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.375 INCHES SECOND END IN |
| Hub Nominal Diameter | 2.125 INCHES FIRST END IN |
| Teeth Quantity | 18 |
| Body Style | WEBBED, SOLID |
| Bore Style | TAPERED W/KEYWAY SECOND END |
| Mounting Hole Type and Quantity | 2 COUNTERSUNK AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.813 INCHES FIRST END IN |
| Throat Nominal Radius | 0.837 INCHES IN |
| Face Type | CONCAVE |
| Mounting Hole Nominal Diameter | 0.500 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | ONE PROTRUDING HUB, ONE FLUSH HUB |
| Taper Major Nominal Diameter | 1.375 INCHES SECOND END IN |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 6.5000 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.849 INCHES SECOND END IN |
| Material | COPPER ALLOY OVERALL |
| Bolt Hole Circle Nominal Diameter | 4.500 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.500 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 |
|---|---|
| DG1237E-11 | 3/9 Design control — primary reference Imo Industries Inc Delroyd Worm Gear Div |
| DG1237E-11 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3020-00-004-8166 is a Gear,worm Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-004-8166: Keyway Nominal Width: 0.312 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.375 INCHES SECOND END IN; Hub Nominal Diameter: 2.125 INCHES FIRST END IN; Teeth Quantity: 18. 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.