The Gear,spur, cataloged under National Stock Number 3020-01-423-4450, 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 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-423-4450 |
| Primary Part Number | 54-6520 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc |
| Status | ACTIVE |
| Material Document and Classification | ASTM B86 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | PLASTIC OVERALL |
| 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 |
|---|---|
| 54-6520 PRIMARY | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA) |
| 6984ED84 PC 10 | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 6984ED84 | D/9 Drawing number reference only Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc |
NSN 3020-01-423-4450 is a Gear,spur, manufactured by Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-423-4450 has 2 manufacturer part numbers on file: 54-6520 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 6984ED84 PC 10 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc).
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-423-4451, 3040-01-424-2171, 3040-01-424-2593. Verify interchangeability with system specifications before substitution.
Key specifications for 54-6520: Material Document and Classification: ASTM B86 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: USED ON NON-MAGNETIC LIMIT SWITCH WATERTIGHT 440 VOLT AC, 230 VOLT DC, CUTLER-HAMMER CO.; End Item Identification: WEAPONS SYSTEM SUPPLY CLASS AOE; Material: PLASTIC OVERALL. 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.