The Holder Assembly,valve Disk, cataloged under National Stock Number 4820-01-046-2993, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-046-2993 |
| Primary Part Number | S56478 |
| Item Name | Holder Assembly,valve Disk |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| General Characteristics Item Description | CORROSION RESISTING STEEL; 2.562 IN.LG; 1.812 IN.DIA; DISK END DRILLED 0.655 IN.DIA; 0.625 IN.DEEP;CONTERBORED 1.300 IN.DIA;0.360 IN.DEEP; 2 PIN HOLES DRILLED INSIDE THRU BODY;STEM END W/THREADED RETAINER WITH 0.810 IN.DIA HOLE FOR STEM IN |
| 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 |
|---|---|
| A36561PC9-10-11 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| A36558PC9-10-11 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| S56478 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
NSN 4820-01-046-2993 is a Holder Assembly,valve Disk, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-046-2993 has 3 manufacturer part numbers on file: A36561PC9-10-11 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), A36558PC9-10-11 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), S56478 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for S56478: General Characteristics Item Description: CORROSION RESISTING STEEL; 2.562 IN.LG; 1.812 IN.DIA; DISK END DRILLED 0.655 IN.DIA; 0.625 IN.DEEP;CONTERBORED 1.300 IN.DIA;0.360 IN.DEEP; 2 PIN HOLES DRILLED INSIDE THRU BODY;STEM END W/THREADED RETAINER WITH 0.810 IN.DIA HOLE FOR STEM 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.
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.