The Reactor, cataloged under National Stock Number 5950-00-221-6658, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Electronic Transformer Corp Div Electronic Transformer Corporation. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-221-6658 |
| Primary Part Number | 65957H |
| Item Name | Reactor |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Electronic Transformer Corp Div Electronic Transformer Corporation |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Body Outside Diameter | 1.250 INCHES NOMINAL IN |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Inductance Rating | 50.00 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING |
| Distance Between Mounting Facility Centers | 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Body Length | 2.250 INCHES NOMINAL IN |
| Winding Operating Current | 2.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING |
| DC Resistance Rating in Ohms | 1480.000 SINGLE COMPONENT SINGLE WINDING |
| Reliability Indicator | NOT ESTABLISHED |
| Winding Quantity | 1 SINGLE COMPONENT |
| Terminal Type and Quantity | 2 TAB, SOLDER LUG |
| 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 |
|---|---|
| L4761B | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| ST1104 | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| 65957H PRIMARY | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| 65957 PRIMARY | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| 65957 | 5/9 Secondary reference U.S. Government activity |
NSN 5950-00-221-6658 is a Reactor, manufactured by Electronic Transformer Corp Div Electronic Transformer Corporation, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-221-6658 has 4 manufacturer part numbers on file: L4761B (Electronic Transformer Corp Div Electronic Transformer Corporation), ST1104 (Electronic Transformer Corp Div Electronic Transformer Corporation), 65957H (Electronic Transformer Corp Div Electronic Transformer Corporation), 65957 (Magnetika Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-396-4972, 5136-01-727-3516. Verify interchangeability with system specifications before substitution.
Key specifications for 65957H: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Body Outside Diameter: 1.250 INCHES NOMINAL IN; Mounting Method: THREADED STUD(S) SINGLE GROUP. 13 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.