The Headset-Microphone, cataloged under National Stock Number 5965-01-554-9501, 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 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5965-01-554-9501 |
| Primary Part Number | HMD-250M1L |
| Item Name | Headset-Microphone |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Sennheiser Electronic Corp |
| Status | ACTIVE |
| Supplementary Features | INAVY: HEADSET W/BOOM MICROPHONE |
| 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 |
|---|---|
| HMD-250M1L PRIMARY | Sennheiser Electronic Corp (USA) |
| Reference | Meaning |
|---|---|
| 2635-126-01-44-2 | 5/1 Secondary reference U.S. Government activity |
| 7285313-44-2 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5965-01-554-9501 is a Headset-Microphone, manufactured by Sennheiser Electronic Corp, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-01-554-9501 has 1 manufacturer part number on file: HMD-250M1L (Sennheiser Electronic Corp).
Key specifications for HMD-250M1L: Supplementary Features: INAVY: HEADSET W/BOOM MICROPHONE; End Item Identification: ONBOARD TEAM TRAINER MASTER CONTROLLER ASSY. 1 specification is 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.