with external hexagon
for fastening with corrugated or trapezoidal sheet roofing.
Stainless steel A2-70
1 x EPDM seal
3 x self-locking nut sinilar to DIN 6923, stainless steel A2
For fastening 40 x 40 and 80 x 40 mounting rail on stud screws.
Stainless steel A2