The Stem,fluid Valve, cataloged under National Stock Number 4820-01-237-0310, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command Logistics Support Engineering Activity. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-237-0310 |
| Primary Part Number | 21S012370310 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command Logistics Support Engineering Activity |
| Status | ACTIVE |
| Valve Type for Which Designed | BALL |
| Stem Actuating End Type | SQUARE |
| Features Provided | SPLINED |
| Valve Size for Which Designed | 3.000 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 |
|---|---|
| 21S012370310 | Naval Sea Systems Command Logistics Support Engineering Activity (USA) |
| Reference | Meaning |
|---|---|
| 845-4558777 ITEM 8 | 5/2 Secondary reference U.S. Government activity |
| 4687583-0002 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-237-0310 is a Stem,fluid Valve, manufactured by Naval Sea Systems Command Logistics Support Engineering Activity, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-237-0310 has 1 manufacturer part number on file: 21S012370310 (Naval Sea Systems Command Logistics Support Engineering Activity).
Key specifications for 21S012370310: Valve Type for Which Designed: BALL; Stem Actuating End Type: SQUARE; Features Provided: SPLINED; Valve Size for Which Designed: 3.000 INCHES 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.