The Gear Sector,spur, cataloged under National Stock Number 3020-01-486-0355, 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 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-486-0355 |
| Primary Part Number | 122-6600338 PC 12 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Keyway Nominal Width | 0.6250 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 2.5000 INCHES BOTH ENDS IN |
| Teeth Quantity | 17 |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Overall Length | 3.7500 INCHES IN |
| Style Designator | SIDE FACE, PROTRUDING HUBS |
| Material Document and Classification | QQ-N-288 B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Distance From Bore Center to Keyway Bottom | 1.5000 INCHES BOTH ENDS IN |
| 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 |
|---|---|
| 122-6600338 PC 12 PRIMARY | Naval Sea Systems Command (USA) |
| 122-4497454 PC 2 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6600338 | D/9 Drawing number reference only Naval Sea Systems Command |
| 44977454 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-486-0355 is a Gear Sector,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-486-0355 has 2 manufacturer part numbers on file: 122-6600338 PC 12 (Naval Sea Systems Command), 122-4497454 PC 2 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 2040-01-486-0494, 3040-01-486-5220, 3120-01-486-9690. Verify interchangeability with system specifications before substitution.
Key specifications for 122-6600338 PC 12: Keyway Nominal Width: 0.6250 INCHES BOTH ENDS IN; Bore Nominal Diameter: 2.5000 INCHES BOTH ENDS IN; Teeth Quantity: 17; Bore Style: W/ KEYWAY BOTH ENDS. 9 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.