The Transformer,power, cataloged under National Stock Number 5950-01-071-5247, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Robert M. Hadley Company, Inc.. Government technical data includes 25 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-071-5247 |
| Primary Part Number | 18829 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Robert M. Hadley Company, Inc. |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.600 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 3.000 INCHES MAXIMUM IN |
| Body Height | 3.000 INCHES MAXIMUM IN |
| Maximum Transformer Power Rating | 28.0 WATTS SINGLE COMPONENT |
| Mounting Hole Diameter | 0.156 INCHES NOMINAL SINGLE GROUP IN |
| Winding Function and Quantity | 1 PRIMARY AND 5 SECONDARY SINGLE COMPONENT |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Body Length | 3.290 INCHES MAXIMUM IN |
| Winding Operating Current | 1.5 AMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Current | 1.5 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 120.0 AMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY |
| Winding Operating Current | 120.0 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 15.0 KILOHERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.600 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 131.50 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 4.90 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Voltage | 4.90 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY |
| Winding Operating Voltage | 4.90 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 4.90 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Terminal Type and Quantity | 12 TAB, SOLDER LUG |
| 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 |
|---|---|
| 18829 PRIMARY | Robert M. Hadley Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 984916-1B | 7/2 Vendor item drawing reference U.S. Government activity |
| 861992 | 5/9 Secondary reference U.S. Government activity |
| 310-13992-01 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-01-071-5247 is a Transformer,power, manufactured by Robert M. Hadley Company, Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-071-5247 has 1 manufacturer part number on file: 18829 (Robert M. Hadley Company, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 2530-01-230-5590, 6520-01-588-3623. Verify interchangeability with system specifications before substitution.
Key specifications for 18829: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.600 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT. 25 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.