The Headset-Microphone, cataloged under National Stock Number 5965-01-641-0237, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 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 | 5965-01-641-0237 |
| Primary Part Number | S1 NOISEGARD |
| Item Name | Headset-Microphone |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Sennheiser Electronic Corp |
| Status | ACTIVE |
| Controlling Agency | SENNHEISER |
| Mounting Method | SUSPENDED ON ADJUSTABLE HEADBAND EARPHONE |
| Microphone Mounting Facility | BOOM ADAPTER ON LEFT SIDE OF HEADBAND |
| Identifying Number | SI NOISEGARD PART NO. OR 504211 TYPE NO. |
| Earphone Quantity | 2 |
| Earphone Element Type | DYNAMIC |
| 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 |
|---|---|
| S1 NOISEGARD PRIMARY | Sennheiser Electronic Corp (USA) |
| 504211 PRIMARY | Sennheiser Electronic Corp (USA) |
NSN 5965-01-641-0237 is a Headset-Microphone, manufactured by Sennheiser Electronic Corp, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-01-641-0237 has 2 manufacturer part numbers on file: S1 NOISEGARD (Sennheiser Electronic Corp), 504211 (Sennheiser Electronic Corp).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-699-2765. Verify interchangeability with system specifications before substitution.
Key specifications for S1 NOISEGARD: Controlling Agency: SENNHEISER; Mounting Method: SUSPENDED ON ADJUSTABLE HEADBAND EARPHONE; Microphone Mounting Facility: BOOM ADAPTER ON LEFT SIDE OF HEADBAND; Identifying Number: SI NOISEGARD PART NO. OR 504211 TYPE NO.. 6 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.