Dril-Flex screws are engineered and processed to help prevent hydrogen-induced brittle failures. Each fastener undergoes the unique Flex Technology dual-hardening process, ensuring the optimal combination of ductility and hardness required for maximum performance in the field. Stalgard coating provides additional corrosion resistance. Testing of this product, in accordance with ASTM standards, has proven that Dril-Flex screws provide the same resistance to hydrogen-assisted cracking (HAC) as a Grade 5 screw. Virtually immune to delayed embrittlement failures
Precision-engineered and dual heat treated drill screws provide the strength, ductility and resistance to embrittlement required for critical applications. Elco Dril-Flex self-drilling screws meet the same construction specifications Hilti Kwik-Flex

Specifications:

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Approvals and Listings
COLA approved and ICC listed

Features and Benefits

• High-hardness points and lead threads for drilling and tapping
• Lower-hardness in load-bearing threads for ductility
• Virtually immune to delayed embrittlement failures
• Stalgard coating provides 1000 hours of salt spray resistance (per ASTM B117)