The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-004-3765, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is B G Laboratories Inc.. Government technical data includes 8 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. 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 | 5950-01-004-3765 |
| Primary Part Number | K126 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | B G Laboratories Inc. |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Mounting Method | TERMINAL SINGLE GROUP |
| Body Width | 0.590 INCHES MAXIMUM IN |
| Body Height | 0.590 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Body Length | 0.590 INCHES MAXIMUM IN |
| Frequency Rating | 300.0 HERTZ MINIMUM AND 3.4 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 4 WIRE LEAD |
| 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 |
|---|---|
| K126 PRIMARY | B G Laboratories Inc. (USA) |
NSN 5950-01-004-3765 is a Transformer,audio Frequency, manufactured by B G Laboratories Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-004-3765 has 1 manufacturer part number on file: K126 (B G Laboratories Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-200-1328, 1015-01-304-9001. Verify interchangeability with system specifications before substitution.
Key specifications for K126: Inclosure Type: FULLY INCLOSED; Mounting Method: TERMINAL SINGLE GROUP; Body Width: 0.590 INCHES MAXIMUM IN; Body Height: 0.590 INCHES MAXIMUM IN. 8 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.