Self-tapping Screw M4 x 16 SS 304 for the RT-APEX.
One hundred in each bag.

The RT-APEX is the most advanced and innovative rail-less residential roof mount. The RT-APEX is a Self-flashing Rail-Less PV Mounting System featuring Roof Tech’s AlphaSeal™ Technology.

The RT-APEX is engineered to withstand wind speeds up to 180 mph and ground snow up to 90 PSF. The RT-APEX is fully waterproof and certified by the International Code Council (ICC-ESR 3575). Stamped PE letters are available for 40 states in the U.S. and five provinces in Canada.