Drilling Reference Charts & Tables
Fast, high-density reference charts and interactive conversion tools formatted for immediate shop-floor lookups on mobile, tablet, or desktop.
Standard Drill Size Chart (232 Sizes)
Searchable reference chart containing all 232 standard drill bit sizes: Fractional Inch (1/64" to 1"), Numbered Wire Gauge (#1 to #80), Letter (A to Z), and Metric (0.5 to 25.0 mm). Includes live text filter.
Drilling Speeds & Feeds Matrix
Machining reference matrix for cutting speed (SFM & m/min) and feed per rev across 8 workpiece materials and 3 tool substrates (HSS, Cobalt M42, and Solid Carbide).
Standard Tap Drill Sizing Chart
Standard hole sizing reference for Metric Coarse (M1.6 to M24), Unified National Coarse (UNC), Unified National Fine (UNF), and NPT pipe threads at 75% thread engagement.
Drill Point Angle Chart by Material
Recommended drill point angles (118°, 135°, 90°, 140°) and lip relief values organized by material hardness, from soft plastics and wood to hardened tool steels and titanium.
Machinist Metric & Imperial Conversion Hub
Interactive bidirectional unit converter engineered specifically for machining: mm ↔ inches, m/min ↔ SFM, mm/min ↔ IPM, and bar ↔ PSI, accompanied by a 64th-inch fraction chart.