The Stem,fluid Valve, cataloged under National Stock Number 4820-01-383-8633, 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 5 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-383-8633 |
| Primary Part Number | 845-4558762 ITEM 8AL1 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Valve Type for Which Designed | BALL |
| Criticality Code Justification | ZZZY |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Material | NICKEL ALLOY |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I 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 |
|---|---|
| 845-4558762 ITEM 8AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2642-820-86 ITEM 7L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2642-820-85 ITEM07L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-4687600 ITEM 7L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-5580474 ITEM 7L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-5580582 ITEM 7L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2642-806-01 ITEM8AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-8616962 IT 7L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2644-820-85 IT 7L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 845-5580582 ITEM 7 | 5/1 Secondary reference Naval Sea Systems Command |
| 2642-806-01 ITEM8A | 5/1 Secondary reference U.S. Government activity |
| 845-8616962 IT 7 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 2642-820-86 ITEM 7 | 5/1 Secondary reference U.S. Government activity |
| 845-5580474 ITEM 7 | 5/1 Secondary reference U.S. Government activity |
| 845-8616962 IT 7 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 2642-820-85 ITEM07 | 5/1 Secondary reference U.S. Government activity |
| 845-4558762 ITEM 8A | 3/1 Design control — primary reference U.S. Government activity |
| 845-4687600 ITEM 7 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-383-8633 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-383-8633 has 9 manufacturer part numbers on file: 845-4558762 ITEM 8AL1 (Naval Inventory Control Point Mechanicsburg), 2642-820-86 ITEM 7L1 (Naval Inventory Control Point Mechanicsburg), 2642-820-85 ITEM07L1 (Naval Inventory Control Point Mechanicsburg), 845-4687600 ITEM 7L1 (Naval Inventory Control Point Mechanicsburg), 845-5580474 ITEM 7L1 (Naval Inventory Control Point Mechanicsburg) and 4 more.
Key specifications for 845-4558762 ITEM 8AL1: Valve Type for Which Designed: BALL; Criticality Code Justification: ZZZY; Valve Size for Which Designed: 1.500 INCHES IN; End Item Identification: VALVE BALL GLOBE. 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.