Unified Drill Size & Decimals Chart

Interactive index of fractional, metric, letter, and number drills with 75% tap drill mappings. Filter and search in real-time below.

Showing 291 of 291 sizes
Drill Size Decimal Inch Decimal mm 75% Tap Size Suggestions
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Printable Wall Posters

High-resolution, shop-ready PDF files formatted for professional printing and posting on your workshop wall.