The Reactor, cataloged under National Stock Number 5950-01-243-8406, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Department of the Army Hq United States Army Communications Research and Development Command. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5950-01-243-8406 |
| Primary Part Number | B4021588-4 |
| Item Name | Reactor |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Department of the Army Hq United States Army Communications Research and Development Command |
| Status | ACTIVE |
| Mounting Facility Quantity | 1 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 0.875 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) SINGLE GROUP |
| Inductance Rating | 1250.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING |
| Mounting Hole Diameter | 0.281 INCHES NOMINAL SINGLE GROUP IN |
| Maximum Operating Temp | 100.0 CELSIUS DEGC |
| Body Length | 0.438 INCHES MINIMUM IN |
| Winding Operating Current | 0.8 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING |
| Rating Method | ELECTRICAL SINGLE COMPONENT SINGLE WINDING |
| DC Resistance Rating in Ohms | 0.700 SINGLE COMPONENT SINGLE WINDING |
| Reliability Indicator | NOT ESTABLISHED |
| Winding Quantity | 1 SINGLE COMPONENT |
| Terminal Type and Quantity | 2 PIN |
| Inductance Type | FIXED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B4021588-4 PRIMARY | Department of the Army Hq United States Army Communications Research and Development Command (USA) |
| SRA-1250 | Magnetika Inc (USA) |
| T518004404 | Lockheed Martin Librascope Corporation (USA) |
| Reference | Meaning |
|---|---|
| SRA-1250 | 5/9 Secondary reference U.S. Government activity |
NSN 5950-01-243-8406 is a Reactor, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-243-8406 has 3 manufacturer part numbers on file: B4021588-4 (Department of the Army Hq United States Army Communications Research and Development Command), SRA-1250 (Magnetika Inc), T518004404 (Lockheed Martin Librascope Corporation).
Key specifications for B4021588-4: Mounting Facility Quantity: 1 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 0.875 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP. 15 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.