![drill tap chart drill tap chart](https://bluepointtool.com/wp-content/uploads/tap_drill_sizes.jpg)
To know which drill bit size is right for your particular tapping application, you need to consider what thread percentage you want when you’re done tapping. How can that be? Well, it’s actually pretty simple. Anytime you see just one size being recommended, you know you can do better–one size does not fit all when it comes to tapping. The same is true of the size recommended on the tap and even the recommended size from the tap manufacturer. Moreover, the size recommended in most drill bit size charts is very often not the best size to use. Let’s start with an important fact–there isn’t just one drill bit size to use for a given tap size. Newsflash: There Isn’t Just One Drill Bit Size for a Tap But in this age of computers and the Internet, you can do better. If it has information on which twist drill size to use for tapping, so much the better. Make no mistake: having a good drill bit size chart (sometimes called a “drill index”) is a very handy thing indeed to have around. What’s better than a drill bit size chart?
#Drill tap chart free#
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#Drill tap chart pdf#
If you just want a simple tap drill chart in Metric and Imperial sizes, or a pdf you can print and post in your workshop, scroll on down.īut, before you do, wouldn’t you like to hear about something that’s much better in every way? Something that’ll make it much less likely you’ll break a tap? Something a little more modern than a simple chart?
![drill tap chart drill tap chart](https://images.sampletemplates.com/wp-content/uploads/2015/09/Printable-Tap-Drill-Chart.jpg)
All rights reserved.Tap Drill Chart: Metric & Imperial Size One pitch length from the major diameter.įormula: Major Dia. In general, you can find the tap-drill for any size 60 degree thread, subtract METRIC FINE SIZES - TAP DRILL SIZE SIZE - 4 mm x. 75% thread) METRIC COARSE SIZES - TAP DRILL SIZE SIZE - 1mm x. Steam, Oilfield, and Gas Engine Restoration