The rack-side hardware in my roof work used quarter-inch fasteners. This short Phillips pack is another purchase in that family, separate from the M5 pieces in the smaller profiles.
The drilled connectors and fasteners joining my added extrusion to the roof rack.
The item in my kit
I bought Quarter-Twenty Phillips Pan-Head Screws as part of my camper van equipment.
The rack-side hardware in my roof work used quarter-inch fasteners. This short Phillips pack is another purchase in that family, separate from the M5 pieces in the smaller profiles.
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
The button-head bolts change the head and driver shape. The iexcell assortment adds several socket-head lengths within quarter-twenty hardware.
Quarter-Twenty Button-Head Bolts
These machine screws have a rounded button head with a hex-socket drive. Their threaded shanks attach parts through matching nuts or threaded holes.
This stainless-steel assortment contains quarter-twenty socket-head cap screws in several lengths. The taller cylindrical heads provide a different shape from button-head screws.
