Screw Products 30952-18 VEGA Hex Washer Head #9 x 1-3/16" Hex Washer Head Corrugated Plastic Roofing Screws - 1-lb per Jar (approx. 95)

• Quick Installation - No Pre-Drilling
• Hole Enlarging Wings - Eliminate Thermal Cracking
• Channel Mount Cleaner Appearance - No Spacers
• Hex Drive Bit Included

The VEGA Corrugated Plastic Roofing Screws are specially designed to be fastened in the bottom of the corrugated plastic panel, resulting in a smoother installation and more aesthetic look. No predrilling needed! The self-tapping threads cut quickly through the panel and the wings mill an oversize hole which allows for thermal movement and reduces the risk of cracks. The special washer seals perfectly and covers the hole completely. Coated with ZYTEC M for typical outdoor use. Quick Installation - VEGA easily penetrates the sheet without any pre-drilling, which greatly reduces the installation time. Hole Enlarging Wings - Wings just below the washer mill an oversized hole in the polycarbonate, which allows for thermal movement. No More Cracks Due To Thermal Movement - The oversized hole made by the wings, reduces the risk of cracks in the sheets by allowing for moderate expansion and contraction around the stem of the screw caused by temperature changes. The special washer seals perfectly and covers the hole completely