The Gear Sector,helical, cataloged under National Stock Number 3020-01-520-3545, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-520-3545 |
| Primary Part Number | 167-6404600 FIND 85 |
| Item Name | Gear Sector,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.438 INCHES BOTH ENDS IN |
| Bore Style | PLAIN BOTH ENDS |
| Teeth Type | SPUR |
| Material Document and Classification | QQ-N-288-CMPSN, COND-AS CAST FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | NICKEL ALLOY OVERALL |
| 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 |
|---|---|
| 167-6404600 FIND 85 PRIMARY | Naval Sea Systems Command (USA) |
| 211063402 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6404600 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-520-3545 is a Gear Sector,helical, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-520-3545 has 2 manufacturer part numbers on file: 167-6404600 FIND 85 (Naval Sea Systems Command), 211063402 (Naval Sea Systems Command).
Key specifications for 167-6404600 FIND 85: Bore Nominal Diameter: 1.438 INCHES BOTH ENDS IN; Bore Style: PLAIN BOTH ENDS; Teeth Type: SPUR; Material Document and Classification: QQ-N-288-CMPSN, COND-AS CAST FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 6 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.