The Gear Cluster, cataloged under National Stock Number 3020-01-423-1878, 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 Ridge Tool Company. 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. 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 | 3020-01-423-1878 |
| Primary Part Number | 44537 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ridge Tool Company |
| Status | ACTIVE |
| Design Type | SPUR ALL GEARS |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 44537 PRIMARY | Ridge Tool Company (USA) |
NSN 3020-01-423-1878 is a Gear Cluster, manufactured by Ridge Tool Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-423-1878 has 1 manufacturer part number on file: 44537 (Ridge Tool Company).
1 possible match (shared part number, not a government interchangeability claim): 7520-01-500-5213. Verify interchangeability with system specifications before substitution.
Key specifications for 44537: Design Type: SPUR ALL GEARS; End Item Identification: STRATEGIC SEALIFT CONVERSON SHIPS CLASS; Attachment Method: MOUNTING HOLE. 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.
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.