This is a remix of the 20 mm Small Thread, Plain Head, T-Bolt with various use cases. 4 different variations are included here.

Advantages to this design:

1. The head of the bolt is 25mm wide, which enables the bolt to actually prevent a snap or shelf bracket to pull out of a Multiboard tile.
2. The head of the bolt also acts as a support offset, meaning that the head is meant to rest against the wall surface to provide additional support to the Multiboard tile, instead of flexing under the weight of a shelf bracket.
3. Bigger head make the bolt easier to tighten by hand.

Depending on your setup, you may be required to remove the Multiboard tile from the wall in order to install the t-bolt from the back.

There are 4 versions, all with 25mm wide heads:

• 20mm thread, with 15mm offset
• 13mm thread, with 15mm offset
• 20mm thread, with 8mm offset
• 13mm thread, with 8mm offset

Use the offset length that match the offset snaps used to mount your Multiboard.

I designed this to use with my Multiboard AMS Shelf Brackets - Get it here!: https://makerworld.com/en/models/425880#profileId-329591