The Loudspeaker,permanent Magnet, cataloged under National Stock Number 5965-00-620-7154, 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 Instruments and Flight Research, Inc.. Government technical data includes 17 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5965-00-620-7154 |
| Primary Part Number | 531955-1 |
| Item Name | Loudspeaker,permanent Magnet |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Instruments and Flight Research, Inc. |
| Status | ACTIVE |
| Voice Coil Diameter | 2.000 INCHES NOMINAL IN |
| Mounting Facility Quantity | 4 |
| Terminal Quantity | 2 |
| Usage Design | INDOOR |
| Terminal Type | SCREW |
| Mounting Slot Length | 0.375 INCHES NOMINAL IN |
| Transducer Type | CONE |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 7.625 INCHES NOMINAL IN |
| Mounting Method | SLOT |
| Frequency Response Range in Hertz | +50.0 TO 13000.0 |
| Style Designator | PIN CUSHION |
| Transducer Diameter | 7.125 INCHES NOMINAL IN |
| Impedance Rating in Ohms | 8.0 VOICE COIL NOMINAL |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 7.625 INCHES NOMINAL IN |
| Power Rating | 20.00 WATTS NORMAL AND 40.00 WATTS PEAK |
| Installation Design | NONPORTABLE |
| Mounting Slot Width | 0.219 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 |
|---|---|
| 531955-1 PRIMARY | Instruments and Flight Research, Inc. (USA) |
| B8HU8H15 | Pegasus Inc (USA) |
| Reference | Meaning |
|---|---|
| B8HU8H15 | 5/9 Secondary reference Mitek Corporation Dba Mtx/oaktron |
| 850D | 5/9 Secondary reference General Electric Co Electronic Components Division of Electronic Atomic and Defense Systems Group |
| LS8 | 5/9 Secondary reference U.S. Government activity |
| 268252 | 5/9 Secondary reference Raytheon Technical Services Company |
| B8H8H15 | 5/9 Secondary reference Mitek Corporation Dba Mtx/oaktron |
| B8H8H15 | 5/9 Secondary reference Pegasus Inc |
NSN 5965-00-620-7154 is a Loudspeaker,permanent Magnet, manufactured by Instruments and Flight Research, Inc., classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-00-620-7154 has 2 manufacturer part numbers on file: 531955-1 (Instruments and Flight Research, Inc.), B8HU8H15 (Pegasus Inc).
2 possible matches (shared part number, not a government interchangeability claim): 3120-00-843-0104, 3110-01-105-4620. Verify interchangeability with system specifications before substitution.
Key specifications for 531955-1: Voice Coil Diameter: 2.000 INCHES NOMINAL IN; Mounting Facility Quantity: 4; Terminal Quantity: 2; Usage Design: INDOOR. 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.