The Retainer,gear Operator, cataloged under National Stock Number 3020-01-123-2201, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-123-2201 |
| Item Name | Retainer,gear Operator |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| General Characteristics Item Description | COPPER ALLOY,MIL-B-24480;7.244 IN. OD;0.940 IN. LG;FOUR HOLES EQUALLY SPACED 0.406 IN. DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 123-4775444 ITEM 12 | 5/2 Secondary reference U.S. Government activity |
| 87542-1705 | D/9 Drawing number reference only U.S. Government activity |
| 87542-1705 ITEM 12 | 3/2 Design control — primary reference U.S. Government activity |
| 123-4775444 | D/9 Drawing number reference only U.S. Government activity |
| 123-4775444 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 3020-01-123-2201 is a Retainer,gear Operator, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-278-7485. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-123-2201: General Characteristics Item Description: COPPER ALLOY,MIL-B-24480;7.244 IN. OD;0.940 IN. LG;FOUR HOLES EQUALLY SPACED 0.406 IN. DIA IN. 1 specification is 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.
NSN 3020-01-123-2201 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.