Small washers were part of the hardware selection around my roof assemblies. This M5 split-washer pack belongs to the metric kit, separate from the larger quarter-inch hardware used at the rack.
The drilled connectors and fasteners joining my added extrusion to the roof rack.
The item in my kit
I bought uxcell M5 Split Lock Washers as part of my camper van equipment.
Small washers were part of the hardware selection around my roof assemblies. This M5 split-washer pack belongs to the metric kit, separate from the larger quarter-inch hardware used at the rack.
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
Sutemribor offers a multi-size split-washer assortment. The black M5 pack retains the single thread-size grouping while changing the finish.
Sutemribor Split-Washer Assortment
This Sutemribor set contains stainless-steel split washers in several metric sizes. The divided box keeps the ring sizes separated.