The Gear Operator,rotary, cataloged under National Stock Number 3020-01-528-3883, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-528-3883 |
| Primary Part Number | 7549820-A1 |
| 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 ASSEMBLY IS USED ON THE GEAR BOX THAT ACTUATES THE VENT DAMPER ON A MISSILE TUBE (P/N 7549682). |
| Material | STEEL AND STEEL CORROSION RESISTING AND NICKEL ALLOY AND RUBBER SYNTHETIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7549820-A1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| G525-6201-A1 | 5/2 Secondary reference U.S. Government activity |
| 7549820 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-528-3883 is a Gear Operator,rotary, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-528-3883 has 1 manufacturer part number on file: 7549820-A1 (Naval Sea Systems Command).
Key specifications for 7549820-A1: General Characteristics Item Description: THIS ASSEMBLY IS USED ON THE GEAR BOX THAT ACTUATES THE VENT DAMPER ON A MISSILE TUBE (P/N 7549682).; Special Features: USED ON: 7549682, VENT DAMPER, SOF TUBE BYPASS. THIS ASSEMBLY DOES NOT INCLUDE THE HANDWHEEL AND UNIVERSAL JOINT; IT IS THE SHAFT, SUPPORTS, AND HARDWARE. THIS ASSEMBLY PLUS THE HANDWHEEL AND UNIVERSALJOINT(PLUS REQUIRED HARDWARE) SEE P/N 7549820, 3020-01-0528-3710; Part Name Assigned by Controlling Agency: SUPPORT ASSEMBLY, MRO VENT DAMPENER D-106; End Item Identification: OHIO CLASS SSN TRIDENT. 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.
NSN 3020-01-528-3883 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.