I am inserting these into scaffold boards and am wondering what size pilot hole I need to drill. Thanks for your help.
Hello Anonymous,
Whenever drilling a pilot hole, it is recommended to drill 1.5mm smaller than the intended screw. In this case, 4.5mm.
Thank you for using Screwfix Q&A.
A.K.C.
Answered by: AliScrewfix1
Date published: 2021-01-14