The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-645-3297, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Viking Technologies, Ltd.. Government technical data includes 17 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-645-3297 |
| Primary Part Number | 12166 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Viking Technologies, Ltd. |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | OPEN |
| Body Outside Diameter | 0.562 INCHES NOMINAL IN |
| Turn Quantity | 7 SINGLE COMPONENT SINGLE PRIMARY |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Inductance Rating | 570.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Conductor Size | 0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Coil Form Type | SOLID SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY SINGLE COMPONENT |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 2.000 INCHES NOMINAL IN |
| Rating Method | WINDING TURNS AND ELECTRICAL SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 35.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 1 TAB, SOLDER LUG AND 2 WIRE LEAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| 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 |
|---|---|
| 12166 PRIMARY | Viking Technologies, Ltd. (USA) |
| Reference | Meaning |
|---|---|
| 12166 | 5/9 Secondary reference Dar Electronics Inc Commercial Products Div Dba National Radio Co |
| 47199 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-00-645-3297 is a Transformer,radio Frequency, manufactured by Viking Technologies, Ltd., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-645-3297 has 1 manufacturer part number on file: 12166 (Viking Technologies, Ltd.).
5 possible matches (shared part number, not a government interchangeability claim): 3020-00-722-0273, 2815-01-121-5133, 3020-01-340-7144. Verify interchangeability with system specifications before substitution.
Key specifications for 12166: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: OPEN; Body Outside Diameter: 0.562 INCHES NOMINAL IN; Turn Quantity: 7 SINGLE COMPONENT SINGLE PRIMARY. 17 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.