The Regulator Selector,valve Assembl, cataloged under National Stock Number 4820-01-010-6639, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-010-6639 |
| Primary Part Number | 616546-1 |
| Item Name | Regulator Selector,valve Assembl |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF COVER 2; DIAPHRAGM 2; GASKET 2; HOUSING 3; MOUNTING BRACKET 1; NIPPLE 1; NUT 2; O RING 3; PAD,BUMPER 3; PLATE 4; RING RETAINING 2; SCREEN 2; SCREW 20; SHIM AR; SNUBBER 2; VALVE STEM 3; WASHER LOCK 12; WASHER PLAIN 12 |
| 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 |
|---|---|
| 616546-1 PRIMARY | Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto (CAN) |
NSN 4820-01-010-6639 is a Regulator Selector,valve Assembl, manufactured by Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-010-6639 has 1 manufacturer part number on file: 616546-1 (Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto).
Key specifications for 616546-1: General Characteristics Item Description: CONSISTS OF COVER 2; DIAPHRAGM 2; GASKET 2; HOUSING 3; MOUNTING BRACKET 1; NIPPLE 1; NUT 2; O RING 3; PAD,BUMPER 3; PLATE 4; RING RETAINING 2; SCREEN 2; SCREW 20; SHIM AR; SNUBBER 2; VALVE STEM 3; WASHER LOCK 12; WASHER PLAIN 12; End Item Identification: 4920009080472. 1 specification is 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.