
This drill and tap chart was copied from my old html site. It does not work well with WordPress. I need to come up with a new idea for displaying the dimensions and their tap sizes. This page is best viewed horizontally.
Drill Bit Sizes For Tapping New Threads
Minimum and maximum drill sizes are indicated for many taps. A smaller hole will have tighter threads, but will be more work to tap in hard materials. A smaller hole (Where 75% of the thread surfaces will make contact) is a good idea in soft metals such as copper or brass. Not responsible for errors and omissions regarding the content of this page.
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1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
|
1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
|
1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
|
1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
|
1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
|
1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
|
1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
|
1/64 | 3/64 |
5/64 |
7/64 | 9/64 | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 25/64 | 27/64 | 29/64 | 31/64 |
33/64 | 35/64 | 37/64 | 39/64 | 41/64 | 43/64 | 45/64 | 47/64 | 49/64 | 51/64 | 53/64 | 55/64 | 57/64 | 59/64 | 61/64 | 63/64 |
.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |
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.1mm |
1mm |
2mm |
3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm |
13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 25mm |