The Reactor, cataloged under National Stock Number 5950-01-210-7221, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Freed Transformer Co. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-210-7221 |
| Primary Part Number | 43379 |
| Item Name | Reactor |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Freed Transformer Co |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 1.200 INCHES MAXIMUM IN |
| Mounting Method | BRACKET(S) AND THREADED HOLE(S) SINGLE GROUP |
| Inductance Rating | 0.50 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING |
| Distance Between Mounting Facility Centers | 1.400 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 1.130 INCHES MAXIMUM IN |
| Winding Quantity | 1 SINGLE COMPONENT |
| Frequency Rating | 40.0 KILOHERTZ NOMINAL SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 2 PIN |
| Inductance Type | FIXED |
| 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 |
|---|---|
| 43379 PRIMARY | Freed Transformer Co (USA) |
| Reference | Meaning |
|---|---|
| 1128EDC123 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 1128EDC123 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5950-01-210-7221 is a Reactor, manufactured by Freed Transformer Co, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-210-7221 has 1 manufacturer part number on file: 43379 (Freed Transformer Co).
2 possible matches (shared part number, not a government interchangeability claim): 5985-01-238-0470, 4730-01-341-7211. Verify interchangeability with system specifications before substitution.
Key specifications for 43379: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 1.200 INCHES MAXIMUM IN; Mounting Method: BRACKET(S) AND THREADED HOLE(S) SINGLE GROUP. 14 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.