The Gear,spur, cataloged under National Stock Number 3020-01-397-5785, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-397-5785 |
| Primary Part Number | 167-6404556 FIND 102 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Keyway Nominal Width | 0.189 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.000 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.625 INCHES BOTH ENDS IN |
| Teeth Quantity | 20 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.280 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.470 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 2.0000 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 2.160 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.595 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | NICKEL ALLOY OVERALL |
| Face Nominal Width | 0.500 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 |
|---|---|
| 167-6404556 FIND 102 PRIMARY | Naval Sea Systems Command (USA) |
| 211073375 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 167-6404556 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-397-5785 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-397-5785 has 2 manufacturer part numbers on file: 167-6404556 FIND 102 (Naval Sea Systems Command), 211073375 (Naval Sea Systems Command).
6 possible matches (shared part number, not a government interchangeability claim): 3040-01-397-5788, 5365-01-532-0319, 5365-01-532-0347. Verify interchangeability with system specifications before substitution.
Key specifications for 167-6404556 FIND 102: Keyway Nominal Width: 0.189 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.000 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.625 INCHES BOTH ENDS IN; Teeth Quantity: 20. 16 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.