The Head and Disk,safety,pressure Re, cataloged under National Stock Number 4820-01-397-5411, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Continental Disc Corporation, Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-397-5411 |
| Primary Part Number | CD30275-02 |
| Item Name | Head and Disk,safety,pressure Re |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Continental Disc Corporation, Llc |
| Status | ACTIVE |
| Disk Material | STEEL COMP 316 |
| Burst Pressure | 2400.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| Head Type | SCREW |
| Disk Type | SOLID |
| Head Material | STEEL COMP 316 OR COPPER ALLOY |
| 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 |
|---|---|
| 1828AS178-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| CD30275-02 PRIMARY | Continental Disc Corporation, Llc (USA) |
| Reference | Meaning |
|---|---|
| 1828AS178 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4820-01-397-5411 is a Head and Disk,safety,pressure Re, manufactured by Continental Disc Corporation, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-397-5411 has 2 manufacturer part numbers on file: 1828AS178-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), CD30275-02 (Continental Disc Corporation, Llc).
Key specifications for CD30275-02: Disk Material: STEEL COMP 316; Burst Pressure: 2400.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Head Type: SCREW; Disk Type: SOLID. 5 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.