The Headset-Microphone, cataloged under National Stock Number 5965-01-426-3191, is classified within Federal Supply Class 5965 (Headsets, Handsets, Microphones and Speakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bosch Security Systems, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5965-01-426-3191 |
| Primary Part Number | PH-3 A5F |
| Item Name | Headset-Microphone |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Bosch Security Systems, Llc |
| Status | ACTIVE |
| Controlling Agency | TELEX |
| Microphone Element Type | DYNAMIC |
| Microphone Mounting Facility | BOOM ADAPTER ON LEFT SIDE OF HEADBAND |
| Identifying Number | PH-3 MODEL NO. |
| Earphone Quantity | 2 |
| Connector Identifying Number | A5F MODEL NO. |
| Connector to Junction Cord Length | 6.000 FEET FT |
| Connector Name | PLUG |
| Earphone Impedance Rating | 150.0 OHMS NOMINAL |
| 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 |
|---|---|
| PH-3 A5F PRIMARY | Bosch Security Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| PH-3 | 5/9 Secondary reference Bosch Security Systems, Llc |
| 64437-007 | 5/9 Secondary reference Telex Communications Inc Sub of Telex Corp |
| 433-7047468 ITEM 11 | 5/1 Secondary reference Naval Sea Systems Command |
| 64437-200 | 5/9 Secondary reference Telex Communications Inc Sub of Telex Corp |
| PH-3 | 3/9 Design control — primary reference Telex Communications Inc Sub of Telex Corp |
NSN 5965-01-426-3191 is a Headset-Microphone, manufactured by Bosch Security Systems, Llc, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-01-426-3191 has 1 manufacturer part number on file: PH-3 A5F (Bosch Security Systems, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 6650-01-619-5088, 6640-01-692-4224. Verify interchangeability with system specifications before substitution.
Key specifications for PH-3 A5F: Controlling Agency: TELEX; Microphone Element Type: DYNAMIC; Microphone Mounting Facility: BOOM ADAPTER ON LEFT SIDE OF HEADBAND; Identifying Number: PH-3 MODEL NO.. 9 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.