Camper Van
Freedom.

Fasteners & Mounting · My build kit

M5 Stainless Split Lock Washers

M5 pieces formed a substantial part of my extrusion hardware purchases. This washer pack keeps that size together, which reflects the separate hardware families I worked with on the roof.

By Steven Smith · Camper Van Freedom

Read my build notes ↓
The drilled connectors and fasteners joining my added extrusion to the roof rack.
The drilled connectors and fasteners joining my added extrusion to the roof rack.

The item in my kit

I bought M5 Stainless Split Lock Washers as part of my camper van equipment.

M5 pieces formed a substantial part of my extrusion hardware purchases. This washer pack keeps that size together, which reflects the separate hardware families I worked with on the roof.

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.
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

uxcell offers another plain M5 split-washer pack. The black-coated set changes the surface finish within the same size grouping.

uxcell M5 Split Lock Washers

uxcell M5 Split Lock Washers

These uxcell M5 washers use a split-ring form rather than a continuous flat disk. The stainless pieces add a distinct washer profile beneath a fastener head or nut.

View on Amazon
Black M5 Split Lock Washers

Black M5 Split Lock Washers

These M5 split washers use a black coating over stainless steel. Their split-ring profile differs from a continuous flat washer.

View on Amazon

Questions from my build

Which hardware sizes appeared in the light-bar mount?

Quarter-twenty hardware on the rack side and M5 hardware on the added 2020 profile.

What slowed down starting the small bolts?

The loose nuts moved or spun in the channel and needed repositioning.

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