NEW STEP BY STEP MAP FOR TYPES OF SCREW HEADS

A slotted or flat push screw head needs a flat blade or slotted screwdriver or little bit to tighten or loosen. They are developed which has a slotted flat line from the head to allow a flat blade to tighten/loosen this type of head. the look has lots of faults, the most crucial a single becoming the driver Device slips out on the slot quite effor