The Headset-Microphone, cataloged under National Stock Number 5965-01-659-2126, 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 Sennheiser Electronic Corp. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5965-01-659-2126 |
| Primary Part Number | 504123 |
| Item Name | Headset-Microphone |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Sennheiser Electronic Corp |
| Status | ACTIVE |
| Earphone Identifying Number | 504123 PART NO. |
| Connector to Junction Cord Length | 9.84 FEET FT |
| Frequency Rating | 0.17 HERTZ NOMINAL AND 0.22 KILOHERTZ NOMINAL |
| Earphone Impedance Rating | 0.16 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 |
|---|---|
| 504123 PRIMARY | Sennheiser Electronic Corp (USA) |
NSN 5965-01-659-2126 is a Headset-Microphone, manufactured by Sennheiser Electronic Corp, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-01-659-2126 has 1 manufacturer part number on file: 504123 (Sennheiser Electronic Corp).
Key specifications for 504123: Earphone Identifying Number: 504123 PART NO.; Connector to Junction Cord Length: 9.84 FEET FT; Special Features: STEREO; BLACK; OVER THE HEAD; BINAURAL EAR CUP; NOISE CANCELLING MICROPHONE; CUSHIONED EAR PADS; OPEN DESIGN EAR CUPS LETS IN AIR TO KEEP YOUR HEAD COOLED DOWN; LIGHTWEIGHT;; Frequency Rating: 0.17 HERTZ NOMINAL AND 0.22 KILOHERTZ NOMINAL. 4 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.