The Loudspeaker,permanent Magnet, cataloged under National Stock Number 5965-01-231-0261, 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 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5965-01-231-0261 |
| Primary Part Number | MM2 |
| Item Name | Loudspeaker,permanent Magnet |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Bosch Security Systems, Llc |
| Status | ACTIVE |
| Voice Coil Diameter | 2.000 INCHES NOMINAL IN |
| FSC Application Data | HEADSETS,HANDSETS,MICROPHONES AND SPEAKERS |
| Mounting Facility Quantity | 1 |
| Terminal Quantity | 2 |
| Usage Design | UNDERWATER |
| Terminal Type | CLIP |
| Transducer Type | DIAPHRAGM |
| Overall Diameter | 6.000 INCHES NOMINAL IN |
| Frequency Response Tolerance in Decibels | -5.0 TO 5.0 |
| Mounting Method | SWIVEL |
| Frequency Response Range in Hertz | +800.0 TO 5000.0 |
| Style Designator | ROUND |
| Impedance Rating in Ohms | 16.0 VOICE COIL NOMINAL |
| Transducer Length | 2.3 INCHES NOMINAL IN |
| Power Rating | 25.00 WATTS NORMAL |
| Installation Design | PORTABLE |
| Transducer Width | 4.0 INCHES NOMINAL IN |
| 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 |
|---|---|
| MM2 PRIMARY | Bosch Security Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| MM2-TC8-9 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 361-010-012 | 5/1 Secondary reference L3harris Interstate Electronics Corporation |
| MM2 | 5/9 Secondary reference U.S. Government activity |
NSN 5965-01-231-0261 is a Loudspeaker,permanent Magnet, manufactured by Bosch Security Systems, Llc, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-01-231-0261 has 1 manufacturer part number on file: MM2 (Bosch Security Systems, Llc).
Key specifications for MM2: Voice Coil Diameter: 2.000 INCHES NOMINAL IN; Overall Height: 5.000 INCHES NOMINAL IN; FSC Application Data: HEADSETS,HANDSETS,MICROPHONES AND SPEAKERS; Mounting Facility Quantity: 1. 17 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.