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IFLScience on MSNWhy Are They Called "Phillips Head" Screws Anyway?In fact, the patent for the original Phillips head screw ran out long ago – so unless ... you may be using a Pozidriv. Since ...
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What Confirmat Screws Are, And Why Your Cabinets Need Themand the head is usually either 3mm hex or Pozidriv, for which you can use a Phillips head screwdriver. Read more: 8 Hammer Types And When To Use Them Confirmat screws lend holding power to ...
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