These professional-grade screws feature an integrated EPDM washer that creates a leak-proof seal, eliminating the need for separate washers. The #10-12 thread size provides superior holding power compared to smaller screws, and the zinc plating offers enhanced corrosion resistance for long-term durability.

These are self-tapping screws that create their own threads, so pre-drilling is typically not required for most applications. However, pre-drilling pilot holes is recommended when fastening into hardwood, thick materials, or near edges to prevent splitting.

For standard residential gutters, you'll need approximately 1 screw every 24-32 inches for gutter hangers, plus additional screws for downspout brackets and end caps. A 250-piece pack typically covers 150-200 linear feet of gutter installation, making it perfect for most residential projects.

Yes! These screws are specifically designed for aluminum gutter installation and are compatible with all standard aluminum gutter systems. The zinc plating prevents galvanic corrosion when used with aluminum materials, ensuring long-lasting performance.

You'll need a 5/16" hex driver bit or socket. This can be used with a drill/driver, impact driver, or socket wrench. The hex head design provides better grip and torque transfer compared to Phillips or slotted heads, making installation faster and more efficient.

Yes, the zinc plating provides excellent corrosion resistance against salt air and moisture. These screws are designed to perform in all climate zones, including coastal areas where standard fasteners often fail due to corrosion.

These versatile fasteners are excellent for metal panel attachment, trim and fascia mounting, outdoor fixture installation, and any exterior application requiring a weather-resistant, leak-proof fastener with superior holding power.

ZIP screw is a brand name for self-tapping screws. Our professional-grade hex head washer screws offer similar self-tapping functionality but with superior features: larger #10-12 thread size for better holding power, integrated EPDM washer for leak-proof sealing, and professional zinc plating for enhanced durability.

While experienced DIYers can use these screws, professional installation is recommended for gutter systems to ensure proper alignment, spacing, and safety. Professional installers have the proper equipment and expertise to work safely from ladders and follow local building codes. Never attempt roof work without proper safety equipment and training.