The Gear Operator,rotary, cataloged under National Stock Number 3020-01-528-3710, 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-528-3710 |
| Primary Part Number | 7549820 |
| Item Name | Gear Operator,rotary |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | THIS IS THE ENTIRE ASSEMBLY ABOVE THE GEAR BOX THAT ACTUATES THE VENT DAMPER ON A MISSILE TUBE |
| Material | STEEL AND STEEL CORROSION RESISTING AND ALUMINUM ALLOY AND RUBBER SYNTHETIC |
| 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 |
|---|---|
| 7549820 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| G525-6201 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-528-3710 is a Gear Operator,rotary, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-528-3710 has 1 manufacturer part number on file: 7549820 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-528-3883. Verify interchangeability with system specifications before substitution.
Key specifications for 7549820: Overall Height: 8.700 INCHES NOMINAL IN; General Characteristics Item Description: THIS IS THE ENTIRE ASSEMBLY ABOVE THE GEAR BOX THAT ACTUATES THE VENT DAMPER ON A MISSILE TUBE; Overall Length: 21.415 INCHES NOMINAL IN; Special Features: THIS ASSEMBLY INCLUDES THE HANDWHEEL AND UNIVERSAL JOINT, AS WELL AS THE SHAFT, SUPPORTS, AND HARDWARE TO ASSEMBLE. FOR THE ASSEMBLY WITHOUT THE HANDWHEEL AND UNIVERSAL JOINT SEE P/N 7549820-A1. 2 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.