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B50643 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COVER,DUST is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, flange_diameter: 0.875 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.320 INCHES NOMINAL IN, body_inside_diameter: 0.344 INCHES NOMINAL IN, body_outside_diameter: 0.525 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-471-0132, 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
B50643
NSN: 2530-00-471-0132
FSC: 2530
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
flange_diameter0.875 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height0.320 INCHES NOMINAL IN
body_inside_diameter0.344 INCHES NOMINAL IN
body_outside_diameter0.525 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.361 INCHES NOMINAL IN
NSN2530-00-471-0132
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COVER,DUST TITLE COMPONENT PN B50643 MFR COVER,DUST
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
922927Interchangeable
interchangeable cross-reference
interchangeable
50643Interchangeable
interchangeable cross-reference
interchangeable
31-09317Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B50643?
B50643 is a COVER,DUST.
What parts can replace B50643?
There are 3 known substitutes for B50643: 922927, 50643, 31-09317. Substitute compatibility should be verified for your specific system.
What is the NSN for B50643?
B50643 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-471-0132. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026