The Retainer,disk,valve, cataloged under National Stock Number 4820-01-066-7930, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-066-7930 |
| Primary Part Number | P58-6 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc |
| Status | ACTIVE |
| Valve Model Number for Which Designed | 640 |
| Valve Design Control Activity | 75214 |
| Material | NICKEL 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 |
|---|---|
| 640PC23 | Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc (USA) |
| P58-6 PRIMARY | Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 640 | D/9 Drawing number reference only Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc |
NSN 4820-01-066-7930 is a Retainer,disk,valve, manufactured by Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-066-7930 has 2 manufacturer part numbers on file: 640PC23 (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc), P58-6 (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc).
Key specifications for P58-6: Valve Model Number for Which Designed: 640; Valve Design Control Activity: 75214; Material: NICKEL ALLOY. 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.