The Seat,valve, cataloged under National Stock Number 4820-01-367-1998, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W & O Supply Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-367-1998 |
| Primary Part Number | 104-37771-90 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | W & O Supply Inc |
| Status | ACTIVE |
| Material | PLASTIC POLYCHLOROFLUOROETHYLENE OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 104-37771-90 | W & O Supply Inc (USA) |
| Reference | Meaning |
|---|---|
| 104-37771 | C/1 Advisory reference — outside the item-of-supply concept Mcc Holdings, Inc. Dba Crane Valve North America Use CAGE Code 59309 for Cataloging |
| 104-37771-90 | 3/9 Design control — primary reference Mcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy |
NSN 4820-01-367-1998 is a Seat,valve, manufactured by W & O Supply Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-367-1998 has 1 manufacturer part number on file: 104-37771-90 (W & O Supply Inc).
Key specifications for 104-37771-90: Material: PLASTIC POLYCHLOROFLUOROETHYLENE OVERALL; Seating Surface Shape: FLAT. 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.