[THREADED SIZE] - M5 x 0.8mm. [MATERIAL] - Made of carbon steel, yellow zinc plated finished,anti-rust and anti-corrosion,superior electrical conductivity. [How to use] - Usually use screws to clamp the connected terminal wire; use a wrench to fix the square nut, and use a drive tool to lock the screw in the tightening position. [Application]- It suitable for indoor and outdoor, widely used in civil furniture, equipment, construction, electrical appliances, industrial machinery, etc., generally used with fasteners, screws, washers, screws, etc., mainly for connection, assembly,fixing and other functions. Quantity: 60 PCS pieces Note: It does not include other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thanks!