The Vent Drain Assembly, cataloged under National Stock Number 4820-01-562-0047, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Machine & Tool Co. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-562-0047 |
| Primary Part Number | 2621-827-05 ASSY 6A |
| Item Name | Vent Drain Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Machine & Tool Co |
| 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 |
|---|---|
| 2621-827-05 ASSY 6A PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 262182705-006A | 5/2 Secondary reference U.S. Government activity |
| 516-7607589-F4 | 5/1 Secondary reference Naval Sea Systems Command |
| G659-9005-F4 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-562-0047 is a Vent Drain Assembly, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-562-0047 has 1 manufacturer part number on file: 2621-827-05 ASSY 6A (Derbyshire Machine & Tool Co).
Key specifications for 2621-827-05 ASSY 6A: Special Features: BRONZE BODY,STRAIGHT THRU FLOW,BOTH END CONNECTIONS 0.500 IN. UNTHD INTERNAL PIPE.SOCKET TYPE W/BRAZING RING GROOVE,MANUALLY OPERATED VENT VALVE STEM, 500.0 PSI WORKING PRESSURE,1.915 IN. LG,2.562 IN. 0/A H IN; End Item Identification: ELECTRONIC AUXILIARY FRESH WATER COOLING. 0 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.