The Disk,rupturable, cataloged under National Stock Number 4820-01-398-5706, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-398-5706 |
| Primary Part Number | 1828AS121-1 |
| Item Name | Disk,rupturable |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Disk Material | COPPER ALLOY |
| Burst Pressure | 800.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| Disk Type | SOLID |
| Disk Size | 0.500 INCHES 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 |
|---|---|
| CD 12155 | Continental Disc Corporation, Llc (USA) |
| 1828AS121-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 1828AS121-1 | Bs&b Safety Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 1828AS121 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4820-01-398-5706 is a Disk,rupturable, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-398-5706 has 3 manufacturer part numbers on file: CD 12155 (Continental Disc Corporation, Llc), 1828AS121-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 1828AS121-1 (Bs&b Safety Systems Llc).
Key specifications for 1828AS121-1: Disk Material: COPPER ALLOY; Burst Pressure: 800.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Disk Type: SOLID; Special Features: DESIGNED FOR OXYGEN SERVICING UNIT A/U26U-1. 4 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.