NOT KNOWN DETAILS ABOUT TYPES OF SCREW HEADS

A slotted screwdriver is still utilized to generate just one of many two perpendicular slots found in the fastener head of a cross or double-slot screw generate. this type is typically located in roofing bolts together with other likewise priced items that Possess a thread that is certainly not less than 5 mm (0. Pancake: Pancake head screws are d