The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-158-6865, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Behlman Electronics, Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-158-6865 |
| Primary Part Number | T-290R-5 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Behlman Electronics, Inc |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Winding Function and Quantity | 2 PRIMARY AND 6 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 100000.0 NOMINAL SINGLE COMPONENT ALL PRIMARY |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Reliability Indicator | NOT ESTABLISHED |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Primary to Secondary Turn Ratio | 1 TO 3 SINGLE COMPONENT |
| Terminal Type and Quantity | 12 TURRET |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| T-290R-5 PRIMARY | Behlman Electronics, Inc (USA) |
| Reference | Meaning |
|---|---|
| 77C714822P001 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
NSN 5950-01-158-6865 is a Transformer,audio Frequency, manufactured by Behlman Electronics, Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-158-6865 has 1 manufacturer part number on file: T-290R-5 (Behlman Electronics, Inc).
Key specifications for T-290R-5: Overall Height: 2.625 INCHES MINIMUM AND 2.875 INCHES MAXIMUM IN; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 13 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.
NSN 5950-01-158-6865 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.