3.6.5 BI-METAL KWIK-FLEX SELF-DRILLING SCREWS
3.6.5.1 PRODUCT DESCRIPTION
Owners , architects and design engineers expect longer life cycles from buildings . Extended warranties and use of more sustainable materials add up to greater expectations for performance — from structural integrity to the purely aesthetic — of all building components .
The solution : Bi-Metal Kwik-Flex Self-Drilling Fasteners
Made of 302 / 304 series ( 18 / 8 ) stainless steel alloy to provide unmatched corrosion resistance in your toughest applications
• Fused and hardened carbon steel drill point and lead threads quickly drill and tap structural steel and aluminum up 1 / 2 " thick
• Coated with silver-colored Kwik- Cote , a galvanic barrier to help protect aluminum components from accelerated corrosion when in contact with 300 series stainless steel
• 300 series stainless alloy is virtually immune to delayed embrittlement failures seen with hardened 400 series stainless self-drilling fasteners
300 series stainless alloy is virtually immune to Hydrogen-Assisted Stress-Corrosion Cracking ( HASCC ). Hardened 410 stainless steel , 410 super-passivated stainless steel and 400 modified stainless steel selfdrilling screws are generally considered susceptible to HASCC . Conventional hardened carbon steel screws with coatings that do not have Kwik-Flex technology ( differential hardness ) are also generally considered susceptible to HASCC .
Minimize corrosion in your applications
• Exposed fastening / coastal / aggressive environments
• Curtain wall / window wall systems / rain screen systems
• Windows / doors / awnings / storefronts
• Panel systems to steel or aluminum framing
• Aluminum enclosures
• ACQ-treated wood ( especially for applications with unknown or uncontrolled moisture conditions )
• Brick veneer anchoring Product features
• Bi-metal technology — 300 ( 18-8 ) stainless steel head and shank provides outstanding corrosion resistance and long service life
• Fused and hardened carbon steel drill point quickly drills and taps into steel or aluminum up to 1 / 2 " thick
• Silver-colored Kwik-Cote coating provides greater galvanic compatibility in dissimilar metal applications involving aluminum
• High strength , ductility and reliability
• Virtually immune to delayed embrittlement or to Hydrogen- Assisted Stress-Corrosion Cracking ( HASCC )
• Wide variety of sizes and head styles
• High in-place value over the life of structures , components and systems
3.6.5.1 Product description 3.6.5.2 Material specifications 3.6.5.3 Technical data 3.6.5.4 Installation instructions 3.6.5.5 Ordering information
Silver-colored Kwik-Cote coating over entire fastener
Self-drilling point
300 series stainless steel head and shank
Fused and hardened carbon steel tapping threads and drill point
Listings / Approvals
ICC-ES ( International Code Council ) ESR-4374 with LABC / LARC Supplement
COLA ( City of Los Angeles ) RR 25886
3.6.5.2 MATERIAL SPECIFICATIONS
Fastener designation |
Fastener material 1 |
Self-drilling point material |
Fastener plating |
Bi-Metal Kwik-Flex Stainless steel Carbon steel Kwik-Cote
1 Bi-Metal Kwik-Flex Fasteners with HWH style are SAE 304 stainless steel , while the PFH and PFHUC style fasteners are SAE 302 stainless steel . All head styles can be custom ordered in SAE 316 stainless steel with sufficient lead time and quantities .
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