The F11100A universal indexing head is one of the main accessories on milling machines. It uses indexing scale rings and verniers, positioning pins and indexing discs, and exchange gears to divide workpieces clamped on the top or chuck into any angle, and can divide the circumference into any equal parts. It assists the machine tool in processing various grooves, spur gears, spiral spur gears, Archimedean spiral cams, etc. using tools of different shapes. The product is also equipped with a circular worktable, which can be directly fastened to the worktable or fastened using fixtures installed on the worktable to complete multi-directional machining of the workpiece.