Professional supply of ball head screws, specially designed for auto lamp universal angle adjustment. Including non-standard hexagon spherical bolts and spring type ball head screws, ideal for light installation and angle positioning. Adopting fine machining process, the spherical head is smooth and flexible, enabling free universal rotation and precise angle adjustment. Hexagon structure is convenient for tool locking and installation; built-in spring design plays buffering and anti-loosening effect, keeping stable positioning after adjustment. Available in conventional metal materials with sturdy structure, wear resistance and long service life. Support non-standard size, specification and structure customization according to demand. Widely used in automotive lamps, mechanical adjustment parts and equipment angle fixing scenarios. Factory direct supply, support batch wholesale and custom processing.