NSN 5965-01-426-3215 — this item is cataloged by the U.S. Government under National Stock Number 5965-01-426-3215. Manufacturer of record part number: MB-21B.
Also searched as5965-01-426-3215 ·
5965014263215 ·
NIIN 014263215 ·
01-426-3215 ·
FSC 5965 Headsets, Handsets, Microphones and Speakers · CAGE 0HBN8 · MB-21B · MB21 · MB21 · MB21
FSC: 5965 — Headsets, Handsets, Microphones and Speakers
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: MB-21B
Manufacturer: Poly-Planar Inc
General Description
The Loudspeaker,permanent Magnet, cataloged under National Stock Number 5965-01-426-3215, 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 Poly-Planar Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5965-01-426-3215
Primary Part Number
MB-21B
Item Name
Loudspeaker,permanent Magnet
FSC / FSG
5965 / 59 — Headsets, Handsets, Microphones and Speakers
Manufacturer
Poly-Planar Inc
Status
ACTIVE
Mounting Facility Quantity
2
Usage Design
OUTDOOR
Transducer Type
CONE
Mounting Method
BRACKET(S)
Style Designator
RECTANGULAR/SQUARE ENCLOSURE
Transducer Diameter
2.5 INCHES NOMINAL IN
Impedance Rating in Ohms
4.0 VOICE COIL NOMINAL
Power Rating
5.00 WATTS NORMAL AND 10.00 WATTS PEAK
Installation Design
NONPORTABLE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 5965 — Headsets, Handsets, Microphones and Speakers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5965-00-001-1492
5965-00-001-1492 · Item name not on file
5965-00-001-7591
CUSHION,EAR
5965-00-001-7592
CUSHION,HEADBAND
5965-00-001-7593
MICROPHONE ELEMENT
5965-00-003-2686
5965-00-003-2686 · Item name not on file
5965-00-003-2690
5965-00-003-2690 · Item name not on file
5965-00-003-4754
5965-00-003-4754 · Item name not on file
5965-00-004-5510
5965-00-004-5510 · Item name not on file
Frequently Asked Questions
What is NSN 5965-01-426-3215?
NSN 5965-01-426-3215 is a Loudspeaker,permanent Magnet, manufactured by Poly-Planar Inc, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
What part numbers are listed for NSN 5965-01-426-3215?
NSN 5965-01-426-3215 has 2 manufacturer part numbers on file: MB-21B (Poly-Planar Inc), MB-21B (Cutlass Associates).
What are the specifications of MB-21B?
Key specifications for MB-21B: Overall Height: 2.500 INCHES NOMINAL IN; Mounting Facility Quantity: 2; Usage Design: OUTDOOR; Transducer Type: CONE. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5965-01-426-3215 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.