The roof assemblies made the differences between screws, washers and slot hardware easy to see. This M4 flat-washer pack is another size in my purchased fastening supplies.
The drilled connectors and fasteners joining my added extrusion to the roof rack.
The item in my kit
I bought M4 Stainless Flat Washers as part of my camper van equipment.
The roof assemblies made the differences between screws, washers and slot hardware easy to see. This M4 flat-washer pack is another size in my purchased fastening supplies.
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
Glarks provides a multi-size metal-washer assortment. Sutemribor changes the material to nylon and includes several sizes, creating a different contact surface.
Glarks Metric Flat-Washer Assortment
This assortment groups several sizes of metric flat washers in one case. The washers use a black finish and a plain circular profile.
This Sutemribor set groups nylon flat washers in several metric sizes. The divided assortment provides different hole sizes in one nonmetal washer kit.
