The Retainer,disk,valve, cataloged under National Stock Number 4820-01-433-4449, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-433-4449 |
| Primary Part Number | 5299-M-180 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 4.000 INCHES IN |
| Valve Design Control Activity | 76364 |
| 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 |
|---|---|
| 5299-M-180 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 1063N4IN PC 4 | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
NSN 4820-01-433-4449 is a Retainer,disk,valve, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-433-4449 has 2 manufacturer part numbers on file: 5299-M-180 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1063N4IN PC 4 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
Key specifications for 5299-M-180: Material Document and Classification: QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE; Valve Size for Which Designed: 4.000 INCHES IN; Valve Design Control Activity: 76364; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 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.