M7 90 mm Roofing Nails  (Pack of 1)

The M7 542802 pack contains 100 sets of specialized roofing nails, each measuring 90mm (approximately 3.5 inches) in length with an approximate 4mm diameter. These nails are specifically designed for built-up roofing applications, featuring a helical/twisted shank for superior grip and a wide, integrated metallic washer/cap for enhanced waterproofing and holding power. Engineered for Built-Up Roofing: Optimized for securing multiple layers of roofing materials, such as insulation boards, membranes, and felt, to various substrates. Extended 90mm (Approx. 3.5-inch) Length: Provides increased penetration depth, ideal for thicker insulation or multiple roofing layers, ensuring a robust anchor. Robust 4mm Diameter Shank: Offers substantial strength to securely fasten roofing materials, resisting bending during installation. Helical/Twisted Shank Design: Features a spiral configuration along the shaft that significantly improves pull-out resistance, creating a more reliable and long-lasting bond. Integrated Large Metallic Washer/Cap: Designed to maximize the bearing surface, effectively preventing tear-through of roofing materials and contributing to a superior seal against moisture.