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B3143 — MICROPHONE INTERCOM

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

B3143: MICROPHONE INTERCOM.

The MICROPHONE INTERCOM is a the manufacturer industrial component. Key specifications include material: GLASS PLATE, outside_diameter: 7.220 INCHES MINIMUM AND 7.250 INCHES MAXIMUM IN, style_designator: ROUND, material_thickness: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5355-00-828-4986, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
B3143
NSN: 5355-00-828-4986
NIINs: 008284986, 016209414
FSC: 5355 — Knobs and Pointers
CAGE: 54497 — MARTIN MARIETTA TECHNOLOGIES INC SUB OF MARTIN MARIETTA CORP AERO AND NAVAL SYSTEMS (USA)
SPECIFICATIONS
materialGLASS PLATE
outside_diameter7.220 INCHES MINIMUM AND 7.250 INCHES MAXIMUM IN
style_designatorROUND
material_thickness0.250 INCHES NOMINAL IN
NSN5355-00-828-4986
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROPHONE INTERCOM TITLE COMPONENT PN B3143 MFR MICROPHONE INTERCOM
KEY FEATURES
•
STYLE DESIGNATOR: ROUND
•
OUTSIDE DIAMETER: 7.220 INCHES MINIMUM AND 7.250 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.250 INCHES NOMINAL IN
•
MATERIAL: GLASS PLATE
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORROUND
OUTSIDE DIAMETER7.220 INCHES MINIMUM AND 7.250 INCHES MAXIMUM IN
MATERIAL THICKNESS0.250 INCHES NOMINAL IN
MATERIALGLASS PLATE
SUBSTITUTES & CROSS-REFERENCES 1
1020B0534Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B3143?
B3143 is a MICROPHONE INTERCOM.
What parts can replace B3143?
There is 1 known substitute for B3143: 1020B0534. Substitute compatibility should be verified for your specific system.
What is the NSN for B3143?
B3143 is cataloged in the U.S. Government catalog under NSN 5355-00-828-4986. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.