Bi-Flex structural screws are bi-metal self-drilling tapping screws that provide the corrosion resistance of 300 series stainless steel and the efficiency of drill screws. Bi-Flex screws are suitable for use in both steel and aluminum.

Features & Specs

• High strength, ductility and reliability
• Higher corrosion resistance compared with carbon steel and 410 series stainless steel fasteners
• 18-8 stainless compatible with pressure treated lumber
• Immune to hydrogen assisted stress corrosion cracking (HASCC)
• Stalgard GB coating creates greater galvanic compatibility in dissimilar metal applications, including connections involving aluminum

General Application & Uses

• Steel-to-steel connections
• Aluminum-to-aluminum connections
• Aluminum-to-steel connections
• Wood-to-steel connections

Approvals & Listings

• International Code Council, Evaluation Service (ICC-ES), ESR-4367
• Code compliant with the International Building Code/International Residential Code:2021 IBC/IRC, 2018 IBC/IRC, 2015 IBC/IRC and 2012 IBC/IRC
• 2020 Florida Building Code (FBC) ICC-ES Report Supplement
• Tested in accordance with ICC-ES AC491 for use in Aluminum
• International Code Council, Evaluation Service (ICC-ES), ESR-4374
• 2020 Los Angeles Building Code (LABC) and Los Angeles Residential Code (LARC) ICC-ES Report Supplement
• Tested in accordance with AISI S905 and ICC-ES AC500 for attaching Miscellaneous Building Materials to Steel