The Gear,spur, cataloged under National Stock Number 3020-01-475-9628, 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 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-475-9628 |
| Primary Part Number | 124-4322623 PC 24 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Keyway Nominal Width | 0.313 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.125 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.000 INCHES BOTH ENDS IN |
| Teeth Quantity | 36 |
| Body Style | WEBBED, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.438 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.023 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 6.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PINNED SECOND END |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Distance From Bore Center to Keyway Bottom | 0.719 INCHES BOTH ENDS IN |
| Material | STEEL OVERALL |
| Attachment Method | STAKED |
| Face Nominal Width | 1.000 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 |
|---|---|
| 124-4322623 PC 24 PRIMARY | Naval Sea Systems Command (USA) |
| 124-4322621 PC 37 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 4322623 | D/9 Drawing number reference only Naval Sea Systems Command |
| 4322621 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-475-9628 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-475-9628 has 2 manufacturer part numbers on file: 124-4322623 PC 24 (Naval Sea Systems Command), 124-4322621 PC 37 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-475-9632. Verify interchangeability with system specifications before substitution.
Key specifications for 124-4322623 PC 24: Keyway Nominal Width: 0.313 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.000 INCHES BOTH ENDS IN; Teeth Quantity: 36. 18 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.