If you want to request an unavailable tap size, first confirm whether we offer it in any material. You can see all of our tap sizes here: Thread/Tap Hole Size Chart
If we do offer the tap size but you’re unable to add it to a part you want to order, that is typically because the tap is too small or too large for the material thickness. The smallest and largest taps available for each material thickness are listed here: Processing Maximum and Minimum Sizes
Please note: we’re unable to make exceptions to our minimum and maximum tap size limits per material.
If you’d like us to start offering a tap size that isn’t available in any material, please feel free to submit a request for consideration through our Service Suggestion Form! We can’t guarantee we’ll be able to add new sizes, but we’re always looking for opportunities to improve our services!
For more tapping guidance, take a look at our tapping articles!
