The Transformer,power, cataloged under National Stock Number 5950-00-591-4327, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Precision Electronics, Inc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-591-4327 |
| Primary Part Number | PEI 8925 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Precision Electronics, Inc |
| Status | ACTIVE |
| Transformer Winding Connection Type | WYE-WYE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Power Rating | 11.5 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY |
| Input-Output Phase Relationship | THREE PHASE TO THREE PHASE SINGLE COMPONENT |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Body Width | 1.500 INCHES MAXIMUM IN |
| Body Height | 2.281 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 2.500 INCHES MAXIMUM IN |
| Winding Operating Current | 500.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 220.0 HERTZ MINIMUM AND 550.0 HERTZ MAXIMUM SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.120 INCHES MINIMUM AND 1.130 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Test Data Document | 83843-956C521 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Winding Operating Voltage | 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 23.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Terminal Type and Quantity | 7 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 |
|---|---|
| PEI 8925 | Precision Electronics, Inc (USA) |
| 956C521-1 | Westinghouse Electric Corp (USA) |
| 59T11C1015 | Omega Associates, Inc. Dba Omega Associates Inc (USA) |
| 828-433 | Magnetic Windings Company Inc (USA) |
| 956C521-1 (83) | Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc (USA) |
| 42173 | Coast/advanced Chip Magnetics, Inc. (USA) |
| T255 | Omega Associates, Inc. Dba Omega Associates Inc (USA) |
| C15668 | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| Reference | Meaning |
|---|---|
| 956C521-1 | 5/9 Secondary reference U.S. Government activity |
| 956C521-1 | 5/9 Secondary reference U.S. Government activity |
| 956C521-1 | 3/2 Design control — primary reference U.S. Government activity |
| T3-36680 | 5/9 Secondary reference Acme Electric Corp |
NSN 5950-00-591-4327 is a Transformer,power, manufactured by Precision Electronics, Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-591-4327 has 8 manufacturer part numbers on file: PEI 8925 (Precision Electronics, Inc), 956C521-1 (Westinghouse Electric Corp), 59T11C1015 (Omega Associates, Inc. Dba Omega Associates Inc), 828-433 (Magnetic Windings Company Inc), 956C521-1 (83) (Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc) and 3 more.
6 possible matches (shared part number, not a government interchangeability claim): 5905-01-093-5709, 4810-01-181-5201, 2520-01-354-8027. Verify interchangeability with system specifications before substitution.
Key specifications for PEI 8925: Transformer Winding Connection Type: WYE-WYE; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 21 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.