(5 lbs 74PCS)#14 x 7 Black Hex Exterior Lag Screws,6.3x175mm, Structural Wood Screw, Heavy Duty Construction Screw, Rust Resistant, Washer Head, Black Coated Exterior Wood Screws

This structural wood screw is made of heat-treated steel and has excellent shear and tensile strength, without bending or breaking. The sharp tip and aggressive threads help penetrate dense wood, and the advanced coating ensures excellent corrosion resistance, making it an ideal choice for external freshwater buildings and pressure treated wood applications. It eliminates pre drilling requirements, shortens installation time by half, and improves construction efficiency. These screws feature slotted tips and specialized rolling handles, which can reduce splitting and greatly reduce the torque required during installation. They also provide strong shear values, making them ideal for fixing external deck frames, fences, stair stringers, landscape wood, etc. in wood to wood outdoor buildings.

• 【Rolling flower stem and self attacking design】：The rolling handle and self tapping design can reduce the rotational resistance during installation. The deep thread profile and notch tip enable the screw to penetrate wooden materials with minimal pre drilling. Easy to firmly fix in hardwood, cork, and laminated boards. Exquisite craftsmanship ensures that our hexagonal washer heads are non slip, fast, not easily broken, have high strength, are not easily deformed, and are not eccentric.
• 【 High quality material 】： The wooden screws are made of carbon steel and coated with a rust proof layer to prevent corrosion and extend their service life. Ideal external wood screws for wood connections, decks, fences, and other wooden structures, designed specifically for outdoor and humid environments, capable of withstanding harsh outdoor weather conditions.
• 【Unique Design】：This self tapping screw features a unique self tapping design that does not require pre drilling. The serrated line provides a stable grip and secure connection, preventing the wooden board from cracking. Hexagonal head design improves transmission performance.
• 【Easy to install】: This screw adopts hexagonal transmission and is equipped with a deep thread profile and a notch tip. The screw head is fuller, with maximum torque, stronger grip, and less likely to slide. It has better grip than traditional cross head screws, ensuring safe and durable fixation.
• 【Widely used】：These screws are suitable for various materials, including wooden furniture, beds, tables, cabinets and chairs, particleboard, cork and hardwood. These wooden screws have been validated in various projects, from deck retrofitting to scaffold construction, and are also suitable for general woodworking tasks such as frame, fence, deck construction, workbench and countertop installation. Can be used for indoor and outdoor wooden structures that require durable fasteners.