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163921 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

163921: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 6350-00-439-8831, 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
163921
NSN: 6350-00-439-8831
FSC: 6350 — Miscellaneous Alarm, Signal, and Security Detection Systems
CAGE: 80252 — FARADAY LLC (USA)
SPECIFICATIONS
Part Number163921
NSN6350-00-439-8831
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BEARING,ROLLER,CYLINDRICAL TITLE COMPONENT PN 163921 MFR BEARING,ROLLER,CYLINDR
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: COMPLETELY AUTOMATIC,COMBINATION FIXED TEMPERATURE AND RATE OF RISE,SELF-RESTORING WHEN OPERATED ON RATE OF RISE PRINCIPLE,PROTECTS UNOBSTRUCTED AREA 50 FT BY 50 FT,RATING 136 DEG F,3.250 IN. DIA,125 VAC,SILVER DOME BLACK BASE,MOUNT ON COVER PLATE FOR A 4 IN. OCTAGON OUTLET BOX VAC
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCOMPLETELY AUTOMATIC,COMBINATION FIXED TEMPERATURE AND RATE OF RISE,SELF-RESTORING WHEN OPERATED ON RATE OF RISE PRINCIPLE,PROTECTS UNOBSTRUCTED AREA 50 FT BY 50 FT,RATING 136 DEG F,3.250 IN. DIA,125 VAC,SILVER DOME BLACK BASE,MOUNT ON COVER PLATE FOR A 4 IN. OCTAGON OUTLET BOX VAC
SUBSTITUTES & CROSS-REFERENCES 8
T-487A1003Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
241Reference document
Same NSN cross-reference
Reference document — Secondary reference
600234Reference document
Same NSN cross-reference
Reference document — Secondary reference
220036/98Reference document
Same NSN cross-reference
Reference document — Secondary reference
220036/198Reference document
Same NSN cross-reference
Reference document — Secondary reference
281BReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 163921?
163921 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 163921?
There are 8 known substitutes for 163921: T-487A1003, 241, 600234 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 163921?
163921 is cataloged in the U.S. Government catalog under NSN 6350-00-439-8831. 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.