TYPES OF SCREW HEADS OPTIONS

The polydrive screw drive, also called RIBE,[seventy four] is spline-shaped with rounded finishes from the fastener head. The Device has 6 flat teeth at equivalent spacing; the measurements are based on the diameter of the star points. The ASTER recess was made by LISI Aerospace[43] to provide a far more dependable Remedy in comparison to the hexa