1These insert nuts are made from high quantity zinc plated carbon steel for durability and rust protection 2Screw-in insert nuts have an external thread and hex socket drive and are screwed in with a hex key wrench 3Insert nuts are advantageous over barrel nuts and T-nuts, because they can be installed from one side of the workpiece 4There are screw-in insert nuts in different sizes and take different screw sizes that you can choose for your project 5The 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 pieceDescription: _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