The Transformer,power, cataloged under National Stock Number 5950-01-186-6721, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-186-6721 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 3.375 INCHES NOMINAL IN |
| Body Height | 4.312 INCHES NOMINAL IN |
| Maximum Transformer Power Rating | 5.5 WATTS SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT |
| Nominal Thread Size | 0.190 INCHES SINGLE GROUP IN |
| Specification/standard Data | 81349-MIL-T-27/300 GOVERNMENT SPECIFICATION |
| Maximum Operating Temp | 105.0 CELSIUS DEGC |
| Body Length | 3.938 INCHES NOMINAL IN |
| Winding Operating Current | 20.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 60.0 HERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Test Data Document | 81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Winding Operating Voltage | 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Winding Operating Voltage | 105.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL AND 125.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Terminal Type and Quantity | 6 TAB, SOLDER LUG |
| Thread Series Designator | UNF 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 |
| Reference | Meaning |
|---|---|
| TF4RX01KB009 | 5/9 Secondary reference U.S. Government activity |
| MIL-PRF-27/300 | 4/1 Identification reference U.S. Government activity |
| MIL-T-27/300 | 5/9 Secondary reference U.S. Government activity |
| MIL-T-27/109 | 5/9 Secondary reference U.S. Government activity |
| 20-000303-006 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| M27/109-01 | 5/9 Secondary reference U.S. Government activity |
| MS90023-2 | 5/9 Secondary reference U.S. Government activity |
| M27/300-10 | 2/2 Government specification standardization U.S. Government activity |
| TF4R03KB928 | 5/9 Secondary reference U.S. Government activity |
| 5950PL0944919 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5950-01-186-6721 is a Transformer,power, classified under FSC 5950, Coils and Transformers. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 5950-01-193-5089, 5950-01-195-4490, 5950-01-230-9550. Verify interchangeability with system specifications before substitution.
Key specifications for 5950-01-186-6721: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Center to Center Distance Between Mounting Facilities Parallel to Length: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT. 23 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.