The Pulley,groove, cataloged under National Stock Number 3020-01-643-1999, 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 The Crosby Group Llc Dba the Crosby Group. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Pulley,groove |
| FSC / FSG | 3020 — Gears, Pulleys, Sprockets, and Transmission Chain (FSG 30) |
| Manufacturers | The Crosby Group Llc Dba the Crosby Group (CAGE 75535); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 3020-01-643-1999 |
| Primary Part Number | 461020 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-01-643-1999 is a Pulley,groove, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-643-1999 has 2 manufacturer part numbers on file: 461020 (The Crosby Group Llc Dba the Crosby Group), 8286982-2 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-643-2125. Verify interchangeability with system specifications before substitution.
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.