We typically recommend using the JT9-4-4.8x19 when fixing vertical profile to EVTII helping hand brackets, and Briklok profiles to vertical profile.
These fasteners are zinc coated for aesthetic reasons and waxed to lubricate the surface during installation.
The drill point and thread forms are designed to provide maximum mechanical performance with ease of installation into aluminium substrates.
These fasteners are orange zinc coated for aesthetic reasons and waxed to lubricate the surface during installation.