Fasteners & Mounting · My build kit

M5 Button-Head Extrusion Screws

My 2020 roof mounts used M5 bolts, and small nuts could move while I started the threads. Short button-head screws are part of the purchased hardware behind that type of extrusion assembly.

By · Camper Van Freedom

Read my build notes ↓

The Item in My Kit

I bought M5 Button-Head Extrusion Screws as part of my camper van equipment.

My 2020 roof mounts used M5 bolts, and small nuts could move while I started the threads. Short button-head screws are part of the purchased hardware behind that type of extrusion assembly.

Starting Small Screws While Keeping the Slot Nuts in Place

  1. I made drilled connectors for the added light-bar beam.
  2. I used quarter-twenty hardware at the rack and M5 hardware at the smaller extrusion.
  3. When small slot nuts moved or spun, I repositioned them with an Allen key so I could start the bolts.
The profiles and joint hardware during my roof-mount assembly.
The profiles and joint hardware during my roof-mount assembly.
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.

My Takeaway from This Job

Getting the threads started took more handling than the finished joint suggests. The choice here is separate short screws, screws and nuts together, or a bracket kit that also supplies the connecting plates.

The profile, connector shape, bolt and slot nut all contributed to the assembly sequence.

Product Details And Van-Build Uses

SpecificationProduct Detail
ThreadM5
HeadRounded button
DriveInternal hex socket

The low rounded head sits on the exposed face of the connection, while the M5 shank reaches the nut inside the slot. My roof-frame work made access to those small threaded pieces important during assembly. For a van extrusion joint, record the plate thickness and actual screw length with the selected nut. Include space for the hex bit above the head, especially where a neighboring rail or a fitted panel will later obstruct the driver.

Exact Retailer Product Reference

Related Build-Kit Reference: Rrina M5 T-Nut and Screw Assortment

Which Parts Define An Extrusion Connection?

Keep the screw length, plate thickness, slot nut and actual profile together in the joint record.

Alternative products

Two Alternatives to Compare

The Rrina set groups screws with slot nuts. The L-connector kit adds plates as well, offering two ways to buy more of the joint hardware together instead of separate screws.

ProductWhat distinguishes itPurchase link
M5 Button-Head Extrusion ScrewsShort M5 button-head screws bought separatelyView on Amazon
Rrina M5 T-Nut and Screw Assortment (alternative)M5 screws and hammer-head slot nuts togetherView on Amazon
2020 Right-Angle Corner Brackets (alternative)Corner plates grouped with M5 screws and slot nutsView on Amazon
Rrina M5 T-Nut and Screw Assortment

Rrina M5 T-Nut and Screw Assortment

This assortment combines M5 screws with hammer-head slot nuts. Its grouped hardware provides fastening pieces for slotted aluminum-extrusion assemblies.

View on Amazon
2020 Right-Angle Corner Brackets

2020 Right-Angle Corner Brackets

These right-angle brackets have drilled fastening holes on their adjoining faces. Their kit groups the plates with M5 screws and sliding slot nuts.

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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