These insert nuts are made from high-quality zinc-plated carbon steel for durability and rust resistance. Screw-in insert nuts feature an external thread and hex socket drive, allowing them to be installed using a hex key wrench. Insert nuts offer an advantage over barrel nuts and T-nuts because they can be installed from one side of the workpiece. Available in various sizes, these insert nuts accept different screw sizes, providing flexibility for a range of projects. The pre-drilled hole must be as deep as the length of the insert nut plus any portion of the bolt that extends beyond the nut in the workpiece. An insert nut provides a threaded socket in wooden materials, similar to a wall anchor. When screwed into a pre-drilled hole, the external threads bite into the wood, preventing rotation and pull-out. Features: - Made from high-quality zinc-plated carbon steel for strength and corrosion resistance - External thread and hex socket drive for easy installation with a hex key - One-sided installation capability, ideal for confined spaces - Available in multiple sizes to suit different fastening requirements - Requires a properly sized and depth-drilled hole for optimal performance Specifications: - Material: Zinc-plated carbon steel - Type: Hex socket screw-in - Thread Type: Coarse thread - Size and Quantity (Optional): - M6 x 10mm – 20 pcs - M6 x 13mm – 20 pcs - M6 x 15mm – 20 pcs - M6 x 17mm – 20 pcs - M6 x 20mm – 20 pcs - M6 x 25mm – 20 pcs - M8 x 13mm – 20 pcs - M8 x 15mm – 20 pcs - M8 x 17mm – 20 pcs - M8 x 20mm – 20 pcs - M8 x 25mm – 20 pcs - M10 x 25mm – 20 pcs Package Includes: 20 pcs x Insert Nuts