The Valve,ball, cataloged under National Stock Number 4820-01-576-7958, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Systemhydraulic Ab Jms. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,ball |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Kongsberg Maritime Sweden Ab (CAGE A208N); Systemhydraulic Ab Jms (CAGE AJ35N) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-576-7958 |
| Primary Part Number | OLO-GS3373 1/2 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Systemhydraulic Ab Jms |
| Status | ACTIVE |
| 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 |
|---|---|
| 133750 REV F ITEM 2 | Kongsberg Maritime Sweden Ab (SWE) |
| OLO-GS3373 1/2 PRIMARY | Systemhydraulic Ab Jms (SWE) |
| 133755 REV F ITEM 2 | Kongsberg Maritime Sweden Ab (SWE) |
| Reference | Meaning |
|---|---|
| OLO-GS3373 1/2 | 3/9 Design control — primary reference Systemhydraulic Ab Jms |
| 133755 REV F ITEM 2 | 5/9 Secondary reference Rolls-Royce Ab |
| 133750 REV F ITEM 2 | 5/9 Secondary reference Rolls-Royce Ab |
NSN 4820-01-576-7958 is a Valve,ball, manufactured by Systemhydraulic Ab Jms, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-576-7958 has 3 manufacturer part numbers on file: 133750 REV F ITEM 2 (Kongsberg Maritime Sweden Ab), OLO-GS3373 1/2 (Systemhydraulic Ab Jms), 133755 REV F ITEM 2 (Kongsberg Maritime Sweden Ab).
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.