Free Printable Tap Drill Size Charts (PDF)
Data
by philipolsen
Drilling a hole that's the wrong size for your tap is a quick way to strip threads or snap a bit, which is exactly what a good tap drill chart prevents. This set of 40 charts pairs every common screw and thread size with the correct drill diameter, covering coarse, fine, metric, and NPT pipe threads. Machinists, hobbyists, and shop teachers can keep the right reference within arm's reach instead of guessing at the bench.
Each chart arrives as a print-ready PDF sized for letter paper, so you can post one above the drill press or slip it into a shop binder. The layouts stay clean and easy to scan, with tap sizes and matching drill bits lined up side by side. Print the chart that matches your work and stop hunting for thread specs mid-job.
Choose from 40 Tap Drill Size Charts Templates
Drill Tap Chart
Tap Drill Chart
Drill Tap Chart
Frequently Asked Questions about Tap Drill Size Charts Templates
Are these Tap Drill Size Charts templates free to download?
Yes. Every Tap Drill Size Charts template in this collection is free to download from TemplateSpark. Just open the template you need, download it, and start editing right away — no subscription required to get started.
What file formats are available for Tap Drill Size Charts templates?
These Tap Drill Size Charts templates are available in PDF. Pick the format that matches your workflow — each download keeps the original layout so it looks right whether you open, print, or share it.
Can I edit or fill in these Tap Drill Size Charts PDF templates?
These Tap Drill Size Charts templates are print-ready PDFs. You can fill them in with any PDF reader or print and complete them by hand — ideal when you want a clean, consistent layout without changing the original design.
How many Tap Drill Size Charts templates can I choose from?
This page collects 40 Tap Drill Size Charts templates so you can compare styles and layouts in one place. Browse the options, open the one that fits your purpose best, and download it in your preferred format.
Can I use Tap Drill Size Charts templates for commercial purposes?
In most cases, yes — these Tap Drill Size Charts templates are intended for both personal and business use. Check the license note on the template before redistributing or reselling, and avoid sharing the source files as your own product.
What is a tap drill size chart and why is it needed?
A tap drill size chart pairs each screw or thread size with the correct drill diameter for the hole before tapping. Using the right size prevents stripped threads or broken taps, ensuring the tap cuts strong, properly formed threads instead of too little or too much material.
How do you use a tap drill chart to pick the right bit?
Find the thread size you plan to tap, then read across to the recommended tap drill size. Charts usually cover coarse and fine threads, metric sizes, and NPT pipe threads, sometimes listing percentages of thread engagement so you can balance ease of tapping against thread strength.
What is the difference between coarse and fine thread tap drill sizes?
Coarse threads have fewer threads per inch and need a slightly smaller pilot hole, while fine threads have more threads per inch and require a marginally larger one. The chart lists separate drill sizes for each, so always confirm which thread pitch you are tapping before drilling.
Comments
Join the conversation
Sign in to share your thoughts and leave a comment on this resource.