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Euclid · Brakes & Wheel End
E540
In stock · ships from Knoxville
This is an inner axle spindle nut used to secure the wheel hub to the spindle on heavy-duty truck and trailer axles.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
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All confirmed applications for this part number.
Other applications
Other applications
This is an inner nut only; verify that your axle requires a 2-5/8"-16 thread and 3-13/16" across-flats hex. A lock washer and outer nut may be needed for complete installation. Cross-reference with OEM and aftermarket part numbers to confirm exact fit.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 22.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It has a 2-5/8"-16 thread and a 3-13/16" hex that requires a matching socket for installation. The nut is typically replaced during wheel bearing overhauls, seal service, or whenever the old nut shows stripped threads, corrosion, or deformation that prevents proper torque.
Part Number: E540
AXLE INNER NUT
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
