I bought wide washers alongside the smaller pieces in the hardware kit. This M8 pack highlights how much the outside diameter can change while the fastener size stays the same.
The drilled connectors and fasteners joining my added extrusion to the roof rack.
The item in my kit
I bought Black M8 Fender Washers as part of my camper van equipment.
I bought wide washers alongside the smaller pieces in the hardware kit. This M8 pack highlights how much the outside diameter can change while the fastener size stays the same.
Where it fits my build
For the light bar, I cut an added extrusion beam and made three short drilled connectors. The rack side used quarter-twenty hardware, while the smaller 2020 extrusion used M5 hardware.
The different nuts changed the assembly sequence. A rack nut had to slide in through an opening, which meant undoing bolts I had already tightened; the smaller nuts could move and spin while I tried to start a bolt. I used an Allen key to reposition them.
The profiles and joint hardware during my roof-mount assembly.
My build notes
The cutting and drilling made the components, but positioning the small hardware took its own time. I recorded the difference between inserting the rack nuts and fishing the smaller nuts into place because it affected how the joint went together.
The profile, connector shape, bolt and slot nut all contributed to the assembly sequence.
Alternative products
Two alternatives to compare
Small Parts offers a narrower zinc-plated M8 washer. The stainless alternative retains a broad twenty-four-millimeter disk with a different finish.
Small Parts M8 Zinc-Plated Flat Washers
These Small Parts washers use a flat steel disk with zinc plating. The M8 size grouping and sixteen-millimeter outside diameter define this pack.
These M8 stainless washers have a twenty-four-millimeter outside diameter. Their broad disks provide a larger contact footprint than narrower flat washers.
