Useful Magnets 12" x 10" Magnetic Tap Drill Chart with Common Countersink Depths | Decimal Equivalents, Fractional, Letter, Number & Metric Drill Sizes | NPSC Pipe Thread Reference

COMPREHENSIVE TAP DRILL REFERENCE - Includes recommended tap drill sizes for UNC, UNF, ISO Metric and NPSC pipe threads, plus fractional, letter, number, decimal and metric drill size data for fast and accurate machining setup. COMMON COUNTERSINK DEPTH CALCULATIONS - Features ready-to-use countersink depth values for standard 60° and 90° countersinks, eliminating manual calculations and reducing setup time during fabrication and machining operations. DECIMAL EQUIVALENTS & METRIC CONVERSIONS - Quickly cross-reference fractional, letter and number drill sizes with decimal and metric equivalents for accurate drill selection and improved workflow efficiency. AUTOMOTIVE-GRADE MAGNETIC MATERIAL - Manufactured using premium 0.03" flexible magnetic material that securely attaches to machine tools, toolboxes, cabinets, workstations and other metal surfaces for instant access. SCRATCH-RESISTANT ANTI-GLARE FINISH - Durable protective coating resists scratches, oil, grease and common shop chemicals while minimizing reflections under bright workshop, garage and machine lighting. MADE IN CANADA QUALITY - Large 12" x 10" color-coded layout with rounded corners, sharp high-contrast printing and professional organization designed for daily use in machine shops, fabrication facilities and industrial environments.