It's a type of fastener consisting of a hexagon head and a screw (cylinder with full thread), which needs to be matched with a nut to fasten and connect two parts with through holes.
The product Smart Street Light, the lamp shell uses die-casting alumininum material; the light body is silver; high-sensitivity radar sensor controller; we have intelligent control system to control the lamp; aluminum alloy side frame; high brightness LED
It has good strength [2], it’s resistant to abrasion and heat, possesses good vibration reduction, and excellent casting performance, which requires manual aging treatment.