The Transformer,power, cataloged under National Stock Number 5950-01-258-6250, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Thermal Dynamics Corp. Government technical data includes 4 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 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 | 5950-01-258-6250 |
| Primary Part Number | 9-3931 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Thermal Dynamics Corp |
| Status | ACTIVE |
| Maximum Transformer Power Rating | 4.4 KILOVOLT-AMPERE SINGLE COMPONENT |
| Winding Operating Current | 20.0 AMPERES AC NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Frequency Rating | 60.0 HERTZ NOMINAL SINGLE COMPONENT |
| Winding Operating Voltage | 220.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| 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 |
|---|---|
| 9-3931 PRIMARY | Thermal Dynamics Corp (USA) |
NSN 5950-01-258-6250 is a Transformer,power, manufactured by Thermal Dynamics Corp, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-258-6250 has 1 manufacturer part number on file: 9-3931 (Thermal Dynamics Corp).
2 possible matches (shared part number, not a government interchangeability claim): 6695-01-669-3693, 5345-01-683-8293. Verify interchangeability with system specifications before substitution.
Key specifications for 9-3931: Overall Height: 42.000 INCHES NOMINAL IN; Maximum Transformer Power Rating: 4.4 KILOVOLT-AMPERE SINGLE COMPONENT; Overall Length: 21.625 INCHES NOMINAL IN; Overall Width: 23.000 INCHES NOMINAL IN. 4 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.