The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-646-4037, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 19 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. 3 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 | 5950-00-646-4037 |
| Primary Part Number | 55199 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Transformer Function | INTERSTAGE |
| Inclosure Type | OPEN |
| Body Outside Diameter | 0.250 INCHES NOMINAL IN |
| Turn Quantity | 25 SINGLE COMPONENT SINGLE SECONDARY |
| Turn Quantity | 25 SINGLE COMPONENT SINGLE PRIMARY |
| Mounting Method | THREADED BUSHING SINGLE GROUP |
| Adjustment Device Drive Type | SLOTTED SCREW SINGLE COMPONENT |
| Adjustment Method and Quantity | 1 ADJUSTABLE CORE SINGLE COMPONENT |
| Winding Conductor Size | 0.00315 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN |
| Winding Conductor Size | 0.00315 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Nominal Thread Size | 0.164 INCHES SINGLE GROUP IN |
| Body Length | 1.094 INCHES NOMINAL IN |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 24.5 MEGAHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 4 TAB, SOLDER LUG |
| 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 |
|---|---|
| 55199 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 5950-00-646-4037 is a Transformer,radio Frequency, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-646-4037 has 1 manufacturer part number on file: 55199 (L3harris Technologies, Inc Div Space & Airborne Systems).
3 possible matches (shared part number, not a government interchangeability claim): 2530-01-147-6424, 2590-01-645-5369, 5120-01-728-6953. Verify interchangeability with system specifications before substitution.
Key specifications for 55199: Transformer Function: INTERSTAGE; Inclosure Type: OPEN; Body Outside Diameter: 0.250 INCHES NOMINAL IN; Turn Quantity: 25 SINGLE COMPONENT SINGLE SECONDARY. 19 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.