The Gear,internal, cataloged under National Stock Number 3020-01-546-7950, 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 Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-546-7950 |
| Primary Part Number | 845-4558718 ITEM 3D4 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 845-4558718 ITEM 3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 264234303-3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2642-343-03 ITEM 3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2642-343-01 REF 3 ITEM NO 3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550479-264234303-3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0003-264234303-3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-264234303-3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-4558716 REF 3 ITEM NO 3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-264234303-3D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| G547-0003-264234303-3 | 5/1 Secondary reference U.S. Government activity |
| 7383858-264234303-3 | 5/1 Secondary reference Naval Sea Systems Command |
| 845-4558718 ITEM 3 | 5/1 Secondary reference U.S. Government activity |
| 264234303-3 | 5/1 Secondary reference U.S. Government activity |
| 2642-343-01 REF 3 ITEM NO 3 | 5/1 Secondary reference U.S. Government activity |
| 2642-343-03 ITEM 3 | 5/1 Secondary reference U.S. Government activity |
| 7550479-264234303-3 | 3/1 Design control — primary reference Naval Sea Systems Command |
| H547-0001-264234303-3 | 5/1 Secondary reference U.S. Government activity |
| 845-4558716 REF 3 ITEM NO 3 | 5/1 Secondary reference U.S. Government activity |
NSN 3020-01-546-7950 is a Gear,internal, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-546-7950 has 9 manufacturer part numbers on file: 845-4558718 ITEM 3D4 (Naval Inventory Control Point Mechanicsburg), 264234303-3D4 (Naval Inventory Control Point Mechanicsburg), 2642-343-03 ITEM 3D4 (Naval Inventory Control Point Mechanicsburg), 2642-343-01 REF 3 ITEM NO 3D4 (Naval Inventory Control Point Mechanicsburg), 7550479-264234303-3D4 (Naval Inventory Control Point Mechanicsburg) and 4 more.
Key specifications for 845-4558718 ITEM 3D4: Criticality Code Justification: ZZZY; End Item Identification: OPERATIONAL ASSEMBLY,PLANETRAY GEAR; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES. 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.