The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-104-8520, 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 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-104-8520 |
| Primary Part Number | 18288 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Robert M. Hadley Company, Inc. |
| Status | ACTIVE |
| Mounting Facility Quantity | 1 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 1.500 INCHES MAXIMUM IN |
| Turn Quantity | 443 SINGLE COMPONENT SINGLE PRIMARY |
| Turn Quantity | 80 SINGLE COMPONENT ALL SECONDARY |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Winding Conductor Size | 0.01003 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Winding Conductor Size | 0.01003 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT ALL SECONDARY IN |
| Coil Form Type | SOLID SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT |
| Nominal Thread Size | 0.112 INCHES SINGLE GROUP IN |
| Body Length | 0.750 INCHES MAXIMUM IN |
| Rating Method | WINDING TURNS SINGLE COMPONENT ALL SECONDARY |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Thread Quantity Per Inch | 40 SINGLE GROUP |
| Terminal Type and Quantity | 10 PIN |
| 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 |
|---|---|
| 18288 | Robert M. Hadley Company, Inc. (USA) |
| P4503 | Sigma Electronics, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 0172-3-1113-037 | 5/9 Secondary reference Ail Systems Inc Sub of Eaton Corp |
| 0172-3-1113-037 | 3/9 Design control — primary reference Usacecom Intelligence Electronic Warfare Sensors Directorate |
NSN 5950-01-104-8520 is a Transformer,radio Frequency, manufactured by Robert M. Hadley Company, Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-104-8520 has 2 manufacturer part numbers on file: 18288 (Robert M. Hadley Company, Inc.), P4503 (Sigma Electronics, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 5950-01-225-3302, 6130-01-425-7084, 1005-01-678-4753. Verify interchangeability with system specifications before substitution.
Key specifications for 18288: Mounting Facility Quantity: 1 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 1.500 INCHES MAXIMUM IN; Turn Quantity: 443 SINGLE COMPONENT SINGLE PRIMARY. 18 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.