SFS Flex5® Selectively Hardened Fasteners with Grade 5 Performance

SFS Flex5® self-drilling fasteners are constructed from alloy steel and undergo a specialized heat treatment process to ensure selective hardness. This treatment provides grade 5 specification performance (RC 26-34) for the load-bearing section of the fastener, while the drill point and lead-in threads are hardened to a minimum of RC 52 to enable effective drilling and tapping into steel. The reduced hardness in the load-bearing region enhances the fastener's ductility, reducing the risk of embrittlement failure.

Applications

  • Curtain wall applications

  • Rainscreen and cladding

  • Faster fastening than a traditional Grade 5 bolt and nut

  • All fenestration systems

  • Solar panel systems connecting aluminum to steel

  • Dissimilar metal applications when used with aluminum


All SFS Flex5® self-drilling fasteners are proudly Made in the USA.

For pricing or more information, contact Mudge Fasteners at (800) 634-0406.

Kyle Domer