The Disk,valve, cataloged under National Stock Number 4820-01-110-7327, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Newdell Company, the Dba Ladish Valves. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-110-7327 |
| Primary Part Number | C1003-EX1-A05 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Newdell Company, the Dba Ladish Valves |
| Status | ACTIVE |
| Outside Diameter | 1.375 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Seat Angle | 30.0 DEGREES NOMINAL |
| Nominal Thread Size | 1.125 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UN |
| 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 |
|---|---|
| C1003-EX1-A05 PRIMARY | Newdell Company, the Dba Ladish Valves (USA) |
| Reference | Meaning |
|---|---|
| A-1003-082 | D/9 Drawing number reference only Newdell Company, the Dba Ladish Valves |
| C-1003-082-007 | 3/9 Design control — primary reference Newdell Company, the Dba Ladish Valves |
NSN 4820-01-110-7327 is a Disk,valve, manufactured by Newdell Company, the Dba Ladish Valves, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-110-7327 has 1 manufacturer part number on file: C1003-EX1-A05 (Newdell Company, the Dba Ladish Valves).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-291-2345. Verify interchangeability with system specifications before substitution.
Key specifications for C1003-EX1-A05: Overall Height: 1.015 INCHES NOMINAL IN; Outside Diameter: 1.375 INCHES NOMINAL IN; Style Designator: PLUG; Seat Angle: 30.0 DEGREES NOMINAL. 8 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.