Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting. The thread-forming screw displaced material around the pilot hole so ...
The Family Handyman on MSN
6 types of screws every DIYer needs to know
Overwhelmed with fastener options for your DIY projects? Learn about screw anatomy, types and materials to help you pick the best screw for your job.
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