Check the listing for details. 1/4-20 x 15mm Threaded Inserts Nuts, 100pcs Wood Insert Nuts with Hex Wrench. Condition: New. Listed at 25.89 USD. Description:1. Material: Threaded inserts for wood are made of carbon steel, color galvanized surface treatment, high hardness, and good wear resistance, standard inner hexagon socket, smooth.2. Application: The wood insert nut is suitable for the connection and fastening of various objects, often used in furniture cabinets, wardrobes, and connecting plates. Good effect on furniture combination. Widely used in cabinets, sofas, office desks, dining tables or chairs, stairs, etc.3. Advantage: Inner hex head with flange, evenly stressed on the inner and outer thread teeth, and the structure is more stable. The flange has a positioning function and is installed on the surface of the connecting surface.4. Installation: Make a hole smaller than the outer diameter of 0.2-0.5mm, and lock the insert nut with the hex wrench.