The Valve,ball, cataloged under National Stock Number 4820-01-312-1842, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-312-1842 |
| Primary Part Number | 2641672 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material | NICKEL ALLOY STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 255757 ASSEMBLY AT | Naval Inventory Control Point Mechanicsburg (USA) |
| 2641672 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 255757 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
| 255757 ASSEMBLY AT | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-312-1842 is a Valve,ball, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-312-1842 has 2 manufacturer part numbers on file: 255757 ASSEMBLY AT (Naval Inventory Control Point Mechanicsburg), 2641672 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 2641672: Flange Shape: ROUND WITH HOLES ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS; Material: NICKEL ALLOY STEM. 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.