The Reactor, cataloged under National Stock Number 5950-01-028-3777, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Dynalec Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-028-3777 |
| Primary Part Number | PK12 |
| Item Name | Reactor |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Dynalec Corporation |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 0.500 INCHES NOMINAL IN |
| Mounting Method | THREADED BUSHING SINGLE GROUP |
| Nominal Thread Size | 0.375 INCHES SINGLE GROUP IN |
| Body Length | 0.760 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Winding Quantity | 1 SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 3 WIRE LEAD |
| Inductance Type | FIXED |
| Thread Series Designator | UNEF 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 |
|---|---|
| PK12 | Dynalec Corporation (USA) |
| PK2001-1PIECE36 | Dynalec Corporation (USA) |
| Reference | Meaning |
|---|---|
| B-12LH-12 | 3/2 Design control — primary reference U.S. Government activity |
| PK12 | 5/9 Secondary reference The Electric Tachometer Corp. |
| PK2001-1PIECE36 | 5/9 Secondary reference The Electric Tachometer Corp. |
NSN 5950-01-028-3777 is a Reactor, manufactured by Dynalec Corporation, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-028-3777 has 2 manufacturer part numbers on file: PK12 (Dynalec Corporation), PK2001-1PIECE36 (Dynalec Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 8315-01-049-7202, 4130-01-520-5196. Verify interchangeability with system specifications before substitution.
Key specifications for PK12: Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 0.500 INCHES NOMINAL IN; Mounting Method: THREADED BUSHING SINGLE GROUP; Nominal Thread Size: 0.375 INCHES SINGLE GROUP IN. 11 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.