The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-018-9748, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Hammond Mfg Co Ltd. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5950-01-018-9748 |
| Primary Part Number | 140Q |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Hammond Mfg Co Ltd |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 1.188 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) SINGLE GROUP |
| Mounting Hole Diameter | 0.156 INCHES NOMINAL SINGLE GROUP IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 600.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Impedance Rating in Ohms | 600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Winding Shielding Method | EXTERNAL INCLOSURE SINGLE COMPONENT |
| Body Length | 1.000 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 70.0 HERTZ MINIMUM AND 11.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Primary to Secondary Turn Ratio | 1 TO 1 SINGLE COMPONENT |
| Terminal Type and Quantity | 6 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 |
NSN 5950-01-018-9748 is a Transformer,audio Frequency, manufactured by Hammond Mfg Co Ltd, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-018-9748 has 3 manufacturer part numbers on file: 140Q (Hammond Mfg Co Ltd), TA28 (Nautel Limited), 140Q (Milspec Services Pty Limited).
1 possible match (shared part number, not a government interchangeability claim): 5342-01-620-7515. Verify interchangeability with system specifications before substitution.
Key specifications for 140Q: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 1.188 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP. 14 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.