The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-455-4450, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Robert M. Hadley Company, Inc.. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-455-4450 |
| Primary Part Number | 16278A |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Robert M. Hadley Company, Inc. |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Body Height | 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 150.0 NOMINAL SINGLE COMPONENT ALL SECONDARY |
| Impedance Rating in Ohms | 100.0 NOMINAL AND 110.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Nominal Thread Size | 0.112 INCHES SINGLE GROUP IN |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Body Length | 0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Reliability Indicator | NOT ESTABLISHED |
| Terminal Type and Quantity | 8 WIRE HOOK |
| 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 |
|---|---|
| 16278A PRIMARY | Robert M. Hadley Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 740640-101 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-00-455-4450 is a Transformer,audio Frequency, manufactured by Robert M. Hadley Company, Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-455-4450 has 1 manufacturer part number on file: 16278A (Robert M. Hadley Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-418-2999. Verify interchangeability with system specifications before substitution.
Key specifications for 16278A: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Mounting Method: THREADED STUD(S) SINGLE GROUP; Body Width: 0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. 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.
NSN 5950-00-455-4450 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.