The Stem,fluid Valve, cataloged under National Stock Number 4820-01-377-3168, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-377-3168 |
| Primary Part Number | 211086816 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Valve Type for Which Designed | RELIEF |
| Stem Actuating End Type | FLATTED |
| Features Provided | INTEGRAL DISK AND THREADED |
| Valve Size for Which Designed | 7.500 INCHES IN |
| Material | STEEL COMP 304 |
| 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 |
|---|---|
| 211086816 PRIMARY | Naval Sea Systems Command (USA) |
| 6406357-2 | Naval Sea Systems Command (USA) |
| DF331068 FIND 2 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 211041495 | 5/9 Secondary reference Naval Sea Systems Command |
| 6406357 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF331068 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-377-3168 is a Stem,fluid Valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-377-3168 has 3 manufacturer part numbers on file: 211086816 (Naval Sea Systems Command), 6406357-2 (Naval Sea Systems Command), DF331068 FIND 2 (Huntington Ingalls Inc Div Newport News Shipbuilding).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-377-3169. Verify interchangeability with system specifications before substitution.
Key specifications for 211086816: Valve Type for Which Designed: RELIEF; Stem Actuating End Type: FLATTED; Overall Length: 6.500 INCHES NOMINAL IN; Features Provided: INTEGRAL DISK AND THREADED. 5 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.