Standard Fasteners are a popular choice for connecting to aluminium profiles at a right-angle.  A number of sizes are available which correspond to the line of aluminium profile used.

See Profiles

See Standard Fasteners

The necessary thread (b) is tapped directly into the core bore of the profile.

A drill hole (a) is required for the Hex key to access the fastener when it is in place.

Position of the through holes for the Hex key.

Standard Fastening Set
5 6 8 8E
a Ø 4.3mm Ø 5.5mm Ø 7mm Ø 7mm
b M5

12mm deep

M6

15mm deep

M8

18mm deep

c 20mm 30mm 40mm 40mm
d 10mm 15mm 20mm 20mm

The standard connecting plates can be arranged to match the way in which the profiles are fitted.
Large profiles with high load-bearing capabilities can be connected using a larger number of Standard Fasteners.