M5 pure copper hand-tightening anti-slip screws (11mm head diameter, 8mm head thickness) (sold in sets of 50, M510mm)

1、Made of pure copper, it is not easy to rust in humid environment, is corrosion-resistant, and has strong anti-oxidation ability. 2、The thread is deep, and the thread is neat and clear, and the force is even and not easy to slip. 3、The exterior is flat and smoothly without burrs, high-quality workmanship, strong and durable. 4、This flat knurled thumb screw has a standard head with uniform force and good fastening effect. 5、The knurling screw can fix components, industrial and construction fasteners. Item Type: Flat Knurled Thumb ScrewMaterial: Pure CopperHead Diameter: Approx. 11mm / 0.4in Head Thickness: Approx. 8mm / 0.3in 50 x Screws