These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Post Onsite · Hardware & Fasteners
10FNUT
In stock · ships from Knoxville
This is a 5/8-inch flange nut, a standard hex nut with an integrated washer-like flange at the base.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
The flange helps distribute clamping force and reduces the chance of loosening from vibration, so it's often used on trucks and trailers where a separate washer is impractical or where space is tight. You would replace it if the threads are damaged, corroded, or if it was removed during a repair and reusing old hardware isn’t recommended.
Part Number: 10FNUT
5/8 FLANGE NUT
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
