The Cock,shutoff,screw Stem, cataloged under National Stock Number 4820-01-418-4073, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Yanmar America Corporation. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-418-4073 |
| Primary Part Number | 183284-55300 |
| Item Name | Cock,shutoff,screw Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Yanmar America Corporation |
| Status | ACTIVE |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| 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 |
|---|---|
| 183284-55300 PRIMARY | Yanmar America Corporation (USA) |
| 183284-55300 | Star Power Services Inc (USA) |
| Reference | Meaning |
|---|---|
| 183284-55300 | 3/9 Design control — primary reference Yanmar Diesel America Corp |
NSN 4820-01-418-4073 is a Cock,shutoff,screw Stem, manufactured by Yanmar America Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-418-4073 has 2 manufacturer part numbers on file: 183284-55300 (Yanmar America Corporation), 183284-55300 (Star Power Services Inc).
Key specifications for 183284-55300: Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE; Valve Operation Method: MANUAL. 2 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.