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Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Screwdrivers are among the simplest hand tools and everybody knows how to use one.

One of the greatest advantages of designing plastic parts is the vast number of assembly options a designer can apply to his or her design. The most common among these options is the use of screws.

Shoulder screws, also known as shoulder bolts and stripper bolts, are machine screws with an integral shoulder or journal between the head and thread. Although they are not readily available in local ...