The Reactor, cataloged under National Stock Number 5950-00-556-1372, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is General Electric Co Boston Apparatus Service Shop. Government technical data includes 17 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-556-1372 |
| Primary Part Number | 81H644 |
| Item Name | Reactor |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | General Electric Co Boston Apparatus Service Shop |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 11.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP |
| Inductance Rating | 4.80 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING |
| Mounting Hole Diameter | 0.438 INCHES NOMINAL SINGLE GROUP IN |
| Maximum Operating Temp | 105.0 CELSIUS DEGC |
| Body Length | 13.688 INCHES MAXIMUM IN |
| Winding Operating Current | 2.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING |
| Rating Method | ELECTRICAL SINGLE COMPONENT SINGLE WINDING |
| DC Resistance Rating in Ohms | 16.000 SINGLE COMPONENT SINGLE WINDING |
| Reliability Indicator | NOT ESTABLISHED |
| Winding Quantity | 1 SINGLE COMPONENT |
| Frequency Rating | 60.0 HERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 11.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Terminal Type and Quantity | 2 STANDOFF, THREADED STUD |
| Inductance Type | FIXED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 81H644 | General Electric Co Boston Apparatus Service Shop (USA) |
| L291797-1A | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| CA726 | 5/9 Secondary reference U.S. Government activity |
| 7656205 | 3/2 Design control — primary reference U.S. Government activity |
| L291797-1A | 5/9 Secondary reference Bendix Corp the |
| T57832 | 5/2 Secondary reference U.S. Government activity |
| RC624 | 5/9 Secondary reference U.S. Government activity |
NSN 5950-00-556-1372 is a Reactor, manufactured by General Electric Co Boston Apparatus Service Shop, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-556-1372 has 2 manufacturer part numbers on file: 81H644 (General Electric Co Boston Apparatus Service Shop), L291797-1A (Raytheon Company Dba Raytheon Co).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-240-7209. Verify interchangeability with system specifications before substitution.
Key specifications for 81H644: Overall Height: 19.437 INCHES MAXIMUM IN; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Center to Center Distance Between Mounting Facilities Parallel to Length: 11.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 17 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.