TYPES OF SCREW HEADS NO FURTHER A MYSTERY

The polydrive screw travel, also referred to as RIBE,[seventy four] is spline-formed with rounded finishes within the fastener head. The Device has 6 flat enamel at equivalent spacing; the measurements are based on the diameter of the star details. The TA is really a variety of screw push that utilizes a triangle-shaped recess within the screw hea