Comprehensive tap size chart for manufacturing and machining. Includes fractional, metric, and numbered screw sizes, decimal equivalents, pitch, and recommended tap drill sizes for threading …

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The 85% and 90% rules works best in the range of 1⁄4 –1 in (6.4–25.4 mm), the sizes most important on many shop floors. Some sizes outside that range have different ratios. Below, these guidelines are …

Tap & Drill Chart: Screw/thread size, major and minor diameter, drill size, decimal equivalent. Tapped hole, close fit, and free fit clearance holes.

Tap & Clearance Drill Sizes Our tap and clearance drill charts are available as an Adobe Acrobat PDF file. You can print this file to use in your shop. To download the file, right-click the link below and …

Tap drill size calculator for Inch and metric threads (For Cutting and Forming Taps). Plus formulas and charts for Tap Drill Size.

Aug 30, 2025 · Discover the updated Tap Drill Size Chart with metric and imperial sizes. Download the free printable PDF and master accurate hole sizing.

ANSI Standard Vee-Thread Recommended Tap size and Drilled pilot Hole.

Feb 13, 2025 · Use our tap drill charts to find the right drill size for screws or bolts and ensure perfect threading every time.

Jul 6, 2025 · Look at tap drill size charts and formulas before you drill. This helps you choose the best drill bit for your thread size and pitch. Get holes ready for special screws by matching hole size to …