The Disk,valve, cataloged under National Stock Number 4820-01-255-6744, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-255-6744 |
| Primary Part Number | D20062 PART 004 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division |
| Status | ACTIVE |
| Taper Minor Diameter | 1.312 INCHES NOMINAL IN |
| Taper Major Diameter | 2.358 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| D20062 PART 004 PRIMARY | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division (USA) |
| Reference | Meaning |
|---|---|
| D20062 PART 004 | 5/9 Secondary reference U.S. Government activity |
| D20062 | D/9 Drawing number reference only Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division |
| D20062 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-255-6744 is a Disk,valve, manufactured by Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-255-6744 has 1 manufacturer part number on file: D20062 PART 004 (Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-255-8882, 4820-01-256-3602. Verify interchangeability with system specifications before substitution.
Key specifications for D20062 PART 004: Overall Height: 6.125 INCHES NOMINAL IN; Taper Minor Diameter: 1.312 INCHES NOMINAL IN; Taper Major Diameter: 2.358 INCHES NOMINAL IN; Material: STEEL. 3 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.