Screws are widely used in threaded fasteners to hold objects together, and in devices such as screw tops for containers, vises, screw jacks and screw presses. Other mechanisms that use the same principle, also called screws, don’t necessarily have a shaft or threads.
Wood screws are handy for quickly building jigs and clamping forms, joining cabinet and furniture parts, mounting hardware and trim, and much more.
Screws form strong connections between parts made from solid wood, plywood and other sheet goods without the need for cut joinery.
There are two basic types of sheet metal screws, self-tapping screws and self-drilling screws.
Self-tapping screws have a sharp tip that is designed to cut through metal, but the metal must be pre-drilled before these screws can be used.
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