THE ULTIMATE GUIDE TO TYPES OF SCREW HEADS

J-bolts are J-formed locking screws that has a flat facet that may be threaded. Bolts like these are generally used in manufacture to connect partitions to concrete foundations or stone. These screws are typically known as Robertson’s. they may have square Centre position which avoid them from stripping out. Quadrex screw drives are a unique bl

A Phillips tamper-resistant screw is just like a Phillips drive screw with one significant exception. It features a tiny pin in the center of the screw push that forestalls — you guessed it — tampering. Originating from Canada, the Robertson, or sq. head screws, feature a sq.-shaped indentation. This style and design allows for a better torque