The Retainer,disk,valve, cataloged under National Stock Number 4820-01-577-8594, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-577-8594 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Valve Model Number for Which Designed | 57-005 3.000IN IN |
| Material Document and Classification | QQ-N-281 CLASS A OR B FED SPEC SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 3.000 INCHES IN |
| Material | NICKEL ALLOY AND 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 |
| Reference | Meaning |
|---|---|
| B3620A-3IN PC 9 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| 57-005 3.0IN PT. NO. 9 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| B3620A-3IN PC 9 | 3/9 Design control — primary reference Pima Valve, Llc |
| 57-005 3.0IN PT. NO. 9 | 5/9 Secondary reference Pima Valve, Llc |
NSN 4820-01-577-8594 is a Retainer,disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-577-8594: Valve Model Number for Which Designed: 57-005 3.000IN IN; Material Document and Classification: QQ-N-281 CLASS A OR B FED SPEC SINGLE MATERIAL RESPONSE; Valve Size for Which Designed: 3.000 INCHES IN; Part Name Assigned by Controlling Agency: NUT,DISK. 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.