The Gear Sector,worm Wheel, cataloged under National Stock Number 3020-00-604-7482, 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 L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-604-7482 |
| Primary Part Number | 2278391-01 |
| Item Name | Gear Sector,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.125 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.219 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.774 INCHES SECOND END IN |
| Nominal Outside Radius | 0.833 INCHES IN |
| Counterbore Nominal Diameter | 0.330 INCHES COUNTER BORE SECOND END IN |
| Bore Style | W/COUNTERBORE COUNTER BORE SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.062 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.050 INCHES SECOND END IN |
| Face Type | CONCAVE |
| Nominal Overall Length | 0.137 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Hub Style Designator | PLAIN BOTH ENDS |
| Counterbore Nominal Depth | 0.044 INCHES COUNTER BORE SECOND END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.087 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 |
| Part Number | Manufacturer |
|---|---|
| 2278391-01 PRIMARY | L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West (USA) |
| Reference | Meaning |
|---|---|
| 2278391-00 | 5/9 Secondary reference L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
NSN 3020-00-604-7482 is a Gear Sector,worm Wheel, manufactured by L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-604-7482 has 1 manufacturer part number on file: 2278391-01 (L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West).
Key specifications for 2278391-01: Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.219 INCHES FIRST END IN; Hub Nominal Diameter: 0.774 INCHES SECOND END IN; Nominal Outside Radius: 0.833 INCHES IN. 15 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.