The ASCE Design Guide for FRP Composite Connections on Page 19 does not recommend self-tapping screws for fastening into pultruded FRP, as follows:

“A number of research studies were conducted on characterizing the structural behavior of pultruded composite connections. In general, there are three schemes for pultruded fiber-reinforced polymer joints: (1) bolted, (2) adhesively bonded, and (3) combined (bolted and bonded).”

GreenGirt CMH and SMARTci are made of composite metal hybrid materials to leverage the best properties of both metal and fiberglass – thereby eliminating the concerns of FRP-only products.