TopicScrew, Bolt & Anchor Hole Sizes

What size drill bit to use for screws, bolts and drywall anchors.

Expert-checked · Updated Nov 2026

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New Screw, Bolt & Anchor Hole Sizes guides are on the way

Our team is testing tools and checking size charts against manufacturer specs for this section. Search the site or start with our most-used guides below.

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Tap Drill Sizes→Drill Bit Size Charts→Metal & Stainless Steel Bits→Drilling Metal→