Teks roofing screws provide secure metal to metal fastening with strong holding power, without the need to pre-drill. Engineered drill-point and flute remove material efficiently and properly size the hole for threads. Ideal for attaching roofing and wall panels to steel framing. Self-sealing neoprene washer provides a waterproof seal and a premium finish provides exceptional corrosion resistance in harsh outdoor environments. Installs with a standard screw gun and a 5/16 in. hex drive bit.Ideal for metal to metal applications and provides exceptional corrosion resistance especially when fastening roofing panels to metal structuresSelf-sealing neoprene washer provides a waterproof seal in harsh outdoor environmentsHigh performance drive surfaces and hex head reduce camp-outs to penetrate surface the first time for easy installationClimacoat premium coating means no streaking from corrosion and rust for long-life finish in exterior applicationsPrecise drill point designed to drill, tap and fasten all in 1 motionNo pre-drilling necessaryHighly versatilePackage includes 40-screwsCommon project applications: roofing, HVAC, steel stud framing, gutters and register vents