The Disk,rupturable, cataloged under National Stock Number 4820-00-570-7932, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Be Cu Manufacturing Co, Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-570-7932 |
| Primary Part Number | 64C21134-7 |
| Item Name | Disk,rupturable |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Be Cu Manufacturing Co, Inc |
| Status | ACTIVE |
| Disk Material | ALUMINUM |
| Burst Pressure | 75.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| Cross-Sectional Shape | FLAT |
| Disk Size | 1.228 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 |
|---|---|
| 64C21134-7 PRIMARY | Be Cu Manufacturing Co, Inc (USA) |
| Reference | Meaning |
|---|---|
| 64C21134-7 | 3/9 Design control — primary reference U.S. Government activity |
| 64C21134-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-570-7932 is a Disk,rupturable, manufactured by Be Cu Manufacturing Co, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-570-7932 has 1 manufacturer part number on file: 64C21134-7 (Be Cu Manufacturing Co, Inc).
Key specifications for 64C21134-7: Disk Material: ALUMINUM; Burst Pressure: 75.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Cross-Sectional Shape: FLAT; Disk Size: 1.228 INCHES IN. 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.