Flat, solid plastic sheets such as PALSUN, PALCLEAR or PLOPAQUE can be fastened with nuts and bolts, provided several points are remembered:
Use EPDM and aluminum washers to distribute the load.
Do not use rivets, as they apply excessive force and cause sheet cracks.
Drill a slightly oversized hole by 2-3 mm, and tighten moderately.
When using mechanical fasteners, they should be evenly spaced to avoid stress accumulation at particular points.
Wherever possible, a floating frame, or H profile installation is preferable, similar to glass, and without mechanical drilled fasteners.