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Electrician's Wiki - Drilling Screws
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Drilling Screws
Brass, Stainless Steel, Steel Self-Tapping Screws
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A self-tapping screw is a screw that can tap its own hole as it is driven into the material. For hard substrates such as metal or hard plastics, the self-tapping ability is often created by cutting a gap in the continuity of the thread on the screw, generating a flute and cutting edge similar to those on a tap.

Location: Flushing,  NY , United States
Description: bolts, nuts, screws, washers
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