screw numbers

What Is A Robinson Screwdriver?

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What Is A Robinson Screwdriver? Robertson’s design consists of a tapered square-tipped screwdriver that fits into a matching square recess (the “socket”) in the screw head. This design makes a Robertson screwdriver less susceptible to cam-out than a Phillips driver because the driver bit inserts deeper into the screw head. What is a Robertson screwdriver

How Do I Know What Size Phillips Screwdriver I Need?

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How Do I Know What Size Phillips Screwdriver I Need? Phillips head screwdrivers come in sizes from 0 to 4. The lower the number, the larger the tip. How would you determine what size Phillips screwdriver to use? Screwdriver Technique The most important technique is to use the right size screwdriver. While screw size is