Features Easily Inserted: Zinc alloy nuts have a unique external line, making it easy to insert holes, which can effectively save energy and improve work efficiency. Preventing Surface Division: Hex drive head nuts are the head design of flange to prevent surface division and drive the insertion too deeply to provide a solid permanent line for the materials of wood and wood. Tight Connection: The hexagonal internal and external thread nuts are easy to install and use, the threads are smooth and clear, and can effectively carry out tight connection. Strong Resistance: The external line of zinc alloy hex-flush m5 internal threads ensure that the strong resistance to the pulled can be well satisfied and practical. Selected Zinc Alloys: The internal and external tooth nuts are made of selected zinc alloy, which has the characteristics of high strength, sturdy and stable, and strong practicality. Features: 1.Made of zinc alloy, durable. 2.Unique external thread makes it insert hole easily and save effort. 3.External thread ensures strong resistance against pull out. 4.Flanged head prevents splitting of the surfaces and driving the insert too deeply. 5.Provide a strong permanent thread for wood and wood based sheet materials. Specifications: Model: M5 Quantity: 50pcs Color: As pictures show Material: Zinc Alloy Length: 1cm/0.39in Hex Width: 0.5cm/0.20in Weight: Approx. 43g   Package included: 50 x Hex Drive Head Nut Package List