The Stem,fluid Valve, cataloged under National Stock Number 4820-00-987-7963, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-987-7963 |
| Primary Part Number | H4820-00-987-7963 |
| 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 |
| Largest Outside Diameter | 0.407 INCHES NOMINAL IN |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Size for Which Designed | 0.500 INCHES IN |
| 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 |
|---|---|
| H4820-00-987-7963 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| SS845-1889836 PIECE 9 | 3/2 Design control — primary reference U.S. Government activity |
| SS845-1889536 PIECE 9 | 5/2 Secondary reference U.S. Government activity |
| 2640-166X1PC9 | 5/2 Secondary reference U.S. Government activity |
| 2640-160PC5 | 5/2 Secondary reference U.S. Government activity |
| 2640-087PC9 | 3/2 Design control — primary reference U.S. Government activity |
| 2640-167X1PC9 | 5/2 Secondary reference U.S. Government activity |
| 2640-157PC9 | 5/2 Secondary reference U.S. Government activity |
| 2640-163PC5 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-987-7963 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-987-7963 has 1 manufacturer part number on file: H4820-00-987-7963 (Naval Inventory Control Point Mechanicsburg).
Key specifications for H4820-00-987-7963: Valve Type for Which Designed: BALL; Largest Outside Diameter: 0.407 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Overall Length: 4.125 INCHES NOMINAL IN. 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.