Coarse Thread SizesFine Thread Sizes

Tap Chart Metric Threads

Mar 17, 2025 · To drill a hole for an M8 tap, you need a 6.8mm drill bit. This is crucial for achieving the correct thread size. Drilling the right size hole for an M8 tap is essential for creating precise threads. …

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Dec 6, 2025 · For tapping an M8 thread, you’ll want a drill bit size that matches the specific thread pitch to guarantee proper engagement and strength. For a standard M8 x 1.25 tap, use a 6.8–6.9 mm drill …

Dec 4, 2025 · Here is everything you need to know about selecting the correct drill bit for an M8 tap, complete with Imperial conversions for those of us who organize our drill indexes by fractions.

Jan 3, 2025 · To determine the right drill bit size for an M8 tap, you need to match the drill bit diameter with the recommended tap drill size for M8 threads. Typically, the tap drill size for M8 threads is 6.8mm.

Sep 3, 2025 · In this post, we’ll break down the essential factors to consider when selecting the perfect drill bit for your M8 tap. You’ll learn the precise drill bit size, the importance of clearance angles, and …

A distinction is made between standard threads and fine threads for the drill size diameter. The tap drill size table here shows the core hole size for metric standard threads.

“Tap Dill Size” is the drill diameter we should use before a tapping operation. By default, the size you will find on most charts is the diameter for 75% thread depth on a Cutting Tap. Here you will learn how to …