THE BASIC PRINCIPLES OF TYPES OF SCREW HEADS

Combination screw heads function a mix of a slotted and Phillips travel on exactly the same head. They allow for the use of both a slotted or Phillips screwdriver, furnishing versatility in set up or elimination. There are also specified head designs — together with slotted hex, hex washer, slotted hex washer and spherical washer — which Ble

The Pozidriv screwdriver has 8 Call points altogether formed from two intersected crosses. It’s also special from Phillips drives as a consequence of its forty five-degree radical indentations. Originating from copyright, the Robertson, or square head screws, characteristic a sq.-shaped indentation. This design and style allows for a better torq