Description: _x000D_ An insert nut provides a threaded socket for a wooden workpiece, similar to a wall anchor. These insert nuts are inserted into a pre-drilled hole by screw in, in that case the external protrusions bite into the wood, preventing the nut from either turning or pulling out. _x000D_ _x000D_ _x000D_ Features: _x000D_ These insert nuts are made from high quantity zinc plated carbon steel for durability and rust protection. _x000D_ _x000D_ Screw-in insert nuts have an external thread and hex socket drive and are screwed in with a hex key wrench. _x000D_ Insert nuts are advantageous over barrel nuts and T-nuts, because they can be installed from one side of the workpiece. _x000D_ There are screw-in insert nuts in different sizes and take different screw sizes that you can choose for your project. _x000D_ The pre-drilled hole must be as deep as the length of the insert nut plus any portion of the bolt that may be screwed past the end of the nut in the work piece._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: Zinc plated carbon steel _x000D_ Type: Hex socket screw-in _x000D_ Thread Type (pitch): Coarse thread_x000D_ _x000D_ Size and Quantity(Optional): _x000D_ _x000D_ M6*10mm 20pcs _x000D_ M6*13mm 20pcs _x000D_ M6*15mm 20pcs_x000D_ _x000D_ M6*17mm 20pcs_x000D_ _x000D_ M6*20mm 20pcs_x000D_ _x000D_ M6*25mm 20pcs _x000D_ M8*13mm 20pcs_x000D_ _x000D_ M8*15mm 20pcs_x000D_ _x000D_ M8*17mm 20pcs_x000D_ _x000D_ M8*20mm 20pcs_x000D_ _x000D_ M8*25mm 20pcs_x000D_ _x000D_ M10*25mm 20pcs_x000D_ _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 20pcs x Insert Nuts