The Reactor, cataloged under National Stock Number 5950-01-407-3074, 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 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-407-3074 |
| Primary Part Number | 21155 |
| Item Name | Reactor |
| 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 |
| Mounting Method | TERMINAL AND UNTHREADED HOLE(S) SINGLE GROUP |
| Inductance Rating | 11.00 MICROHENRIES NOMINAL SINGLE COMPONENT FIFTH WINDING |
| Inductance Rating | 31.50 MICROHENRIES NOMINAL SINGLE COMPONENT SECOND WINDING |
| Inductance Rating | 39.00 MICROHENRIES MINIMUM SINGLE COMPONENT FIRST WINDING |
| Inductance Rating | 39.00 MICROHENRIES NOMINAL SINGLE COMPONENT THIRD WINDING |
| Inductance Rating | 48.00 MICROHENRIES MINIMUM SINGLE COMPONENT FOURTH WINDING |
| Mounting Hole Diameter | 0.114 INCHES NOMINAL ALL GROUPINGS IN |
| Rating Method | ELECTRICAL SINGLE COMPONENT ALL WINDING |
| DC Resistance Rating in Ohms | 0.040 SINGLE COMPONENT FIRST WINDING |
| DC Resistance Rating in Ohms | 0.040 SINGLE COMPONENT FOURTH WINDING |
| DC Resistance Rating in Ohms | 0.050 SINGLE COMPONENT FIFTH WINDING |
| DC Resistance Rating in Ohms | 0.075 SINGLE COMPONENT SECOND WINDING |
| DC Resistance Rating in Ohms | 0.075 SINGLE COMPONENT THIRD WINDING |
| Reliability Indicator | NOT ESTABLISHED |
| Winding Quantity | 5 SINGLE COMPONENT |
| Frequency Rating | 10.0 KILOHERTZ NOMINAL SINGLE COMPONENT |
| Terminal Type and Quantity | 12 PRINTED CIRCUIT |
| Inductance Type | FIXED |
| 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 |
|---|---|
| 21155 PRIMARY | Robert M. Hadley Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| H8000066-001 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-01-407-3074 is a Reactor, manufactured by Robert M. Hadley Company, Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-407-3074 has 1 manufacturer part number on file: 21155 (Robert M. Hadley Company, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4810-01-512-5599, 4820-01-514-8440. Verify interchangeability with system specifications before substitution.
Key specifications for 21155: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Mounting Method: TERMINAL AND UNTHREADED HOLE(S) SINGLE GROUP; Inductance Rating: 11.00 MICROHENRIES NOMINAL SINGLE COMPONENT FIFTH WINDING. 20 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.