The Stem,fluid Valve, cataloged under National Stock Number 4820-01-323-7301, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-323-7301 |
| Primary Part Number | 4384538 SH 16 PIECE 29L1 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Valve Size for Which Designed | 16.000 INCHES IN |
| Material | NICKEL ALLOY K-500 |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 4384538 SH 16 PIECE 29L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 255369 SH 16 PIECE 29L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 810-4384538 PIECE 29L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 255369 PIECE 29L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 4384538 SH 16 PIECE 29 | 5/1 Secondary reference U.S. Government activity |
| 810-4384538 PIECE 29 | 5/1 Secondary reference U.S. Government activity |
| 810-4384538 PIECE 29 | 3/1 Design control — primary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 255369 PIECE 29 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 255369 SH 16 PIECE 29 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-323-7301 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-323-7301 has 4 manufacturer part numbers on file: 4384538 SH 16 PIECE 29L1 (Naval Inventory Control Point Mechanicsburg), 255369 SH 16 PIECE 29L1 (Naval Inventory Control Point Mechanicsburg), 810-4384538 PIECE 29L1 (Naval Inventory Control Point Mechanicsburg), 255369 PIECE 29L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 4384538 SH 16 PIECE 29L1: Criticality Code Justification: ZZZY; Valve Size for Which Designed: 16.000 INCHES IN; End Item Identification: 16 IN COMB HULL AND BACKUP SEA VALVE IN; Material: NICKEL ALLOY K-500. 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.