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21-487 — LOUDSPEAKER,PERMANENT MAGNET

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

21-487: LOUDSPEAKER,PERMANENT MAGNET.

The LOUDSPEAKER,PERMANENT MAGNET is a the manufacturer industrial component. Key specifications include end_item_identification: F/A-22 RAPTOR. This part is cataloged in the U.S.

Government catalog under NSN 5355-00-067-6558, 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
MRO→ MRO_GENERAL→ 21-487
NSN: 5355-00-067-6558
NIINs: 000676558, 003584680, 008527312, 010493257, 010988867, 011090176, 011570684, 012511135, 014877411, 015180828
FSC: 5355 — Knobs and Pointers
CAGE: 95924 — NEUROTECH CORP CONTROL ELECTRONICS DIV (USA)
SPECIFICATIONS
end_item_identificationF/A-22 RAPTOR
NSN5355-00-067-6558
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOUDSPEAKER,PERMANENT MAGNET TITLE COMPONENT PN 21-487 MFR LOUDSPEAKER,PERMANENT
KEY FEATURES
•
POSITIONING MECHANISM TYPE: KNOB
•
DRIVE TYPE: DIRECT
•
STYLE DESIGNATOR: ROUND W/KNOB
•
OUTSIDE DIAMETER: 1.687 INCHES NOMINAL IN
•
SETSCREW HOLE QUANTITY: 1
•
SCALE TYPE: LINEAR SINGLE SCALE
•
SCALE DIVISION QUANTITY: 100 FIRST SCALE
TECHNICAL CHARACTERISTICS
POSITIONING MECHANISM TYPEKNOB
DRIVE TYPEDIRECT
STYLE DESIGNATORROUND W/KNOB
OUTSIDE DIAMETER1.687 INCHES NOMINAL IN
SETSCREW HOLE QUANTITY1
SCALE TYPELINEAR SINGLE SCALE
SCALE DIVISION QUANTITY100 FIRST SCALE
SCALE DIVISION QUANTITY5 SECOND SCALE
HEIGHT1.000 INCHES NOMINAL IN
ATTACHMENT METHODSETSCREWS
SUBSTITUTES & CROSS-REFERENCES 1
003-9999Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21-487?
21-487 is a LOUDSPEAKER,PERMANENT MAGNET. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21-487?
There is 1 known substitute for 21-487: 003-9999. Substitute compatibility should be verified for your specific system.
What is the NSN for 21-487?
21-487 is cataloged in the U.S. Government catalog under NSN 5355-00-067-6558. 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.