The Regulator,thermostatic Temperatu, cataloged under National Stock Number 4820-01-353-1658, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Schneider Electric Systems Usa Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-353-1658 |
| Primary Part Number | 98561A2 |
| Item Name | Regulator,thermostatic Temperatu |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Schneider Electric Systems Usa Inc |
| Status | ACTIVE |
| Bulb Length | 24.000 INCHES NOMINAL IN |
| Bulb Diameter | 1.250 INCHES NOMINAL IN |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| Operating Temp Rating | 45.0 FAHRENHEIT MINIMUM AND 80.0 FAHRENHEIT MAXIMUM DEGF |
| Thermostat Type | BULB |
| Usage Design | CONTROL VALVE FLOW |
| 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 |
|---|---|
| 98561A PIECE 2 | Schneider Electric Systems Usa Inc (USA) |
| 98561A2 PRIMARY | Schneider Electric Systems Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| 98561A | D/9 Drawing number reference only Schneider Electric Systems Usa Inc |
NSN 4820-01-353-1658 is a Regulator,thermostatic Temperatu, manufactured by Schneider Electric Systems Usa Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-353-1658 has 2 manufacturer part numbers on file: 98561A PIECE 2 (Schneider Electric Systems Usa Inc), 98561A2 (Schneider Electric Systems Usa Inc).
Key specifications for 98561A2: Bulb Length: 24.000 INCHES NOMINAL IN; Bulb Diameter: 1.250 INCHES NOMINAL IN; Capillary Tube Length: 120.000 INCHES NOMINAL IN; Operating Temp Rating: 45.0 FAHRENHEIT MINIMUM AND 80.0 FAHRENHEIT MAXIMUM DEGF. 6 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.