Triangle Fastener Corp. has launched a complete line of corrosion-resistant zinc head screws. Available on the high-performance BLAZER Drill Screws, these fasteners are preferred for use in many warranted roof systems. The ZAMAC-5 Zinc Alloy Head provides superior strength and will not red rust. The carbon steel shank is TRI-SEAL 1,000-hours salt-spray- coated, which increases the corrosion resistance by more than 20 times compared to zinc-plated screws. An EPDM washer seals and weathers. Sizes include #12 and 1/4-inch diameters in BLAZER-3 and BLAZER-5 drill points in lengths up to 4 inches.