Here is a list of tap and drill sizes. Metric tap drill size chart, Standard drill and tap chart. Sometimes drilling and tapping in manufactured parts are often required. One of the most common ways to produce such a threaded hole is to drill a suitably sized hole with a drill bit and then tap it with a tap.
Tap drill chart standard Metric, Explain Tap and Drill sizes
Each standard size of screw thread has one or several similar drill bit sizes that are within the appropriate size range. tap slightly larger than a minor diameter, but smaller than its pitch and major diameter.
Such a properly sized drill is called a tap drill for the size of the thread, as it is a correct drill to be followed by a tap. Many thread sizes have many potential tap drills as they are threads of varying thread depths between 50% and 100%. Typically, thread depths of 60% to 75% are desired.
People often use such a chart to determine the appropriate tap drill for a certain thread size or the appropriate tap for an existing hole, which we have given below.
List of Tap and Drill size - Metric thread tap drill chart
Tap drill size chart for standard threads
| Tap Size | Drill Size |
|---|---|
| M1 x 0.25 | 0.75mm |
| M1.1 x 0.25 | 0.85mm |
| M1.2 x 0.25 | 0.95mm |
| M1.4 x 0.30 | 1.10mm |
| M1.6 x 0.35 | 1.25mm |
| M1.8 x 0.35 | 1.45mm |
| M2 x 0.4 | 1.60mm |
| M2.2 x 0.45 | 1.75mm |
| M2.5 x 0.45 | 2.05mm |
| M3 x 0.5 | 2.50mm |
| M3.5 x 0.6 | 2.90mm |
| M4 x 0.7 | 3.30mm |
| M4.5 x 0.75 | 3.70mm |
| M5 x 0.8 | 4.20mm |
| M6 x 1 | 5.00mm |
| M7 x 1 | 6.00mm |
| M8 x 1.25 | 6.80mm |
| M9 x 1.25 | 7.80mm |
| M10 x 1.5 | 8.50mm |
| M11 x 1.5 | 9.50mm |
| M12 x 1.75 | 10.20mm |
| M14 x 2 | 12.00mm |
| M16 x 2 | 14.00mm |
| M18 x 2.5 | 15.50mm |
| M20 x 2.5 | 17.50mm |
| M22 x 2.5 | 19.50mm |
| M24 x 3 | 21.00mm |
| M27 x 3 | 24.00mm |
| M30 x 3.5 | 26.50mm |
| M33 x 3.5 | 29.50mm |
| M36 x 4 | 32.00mm |
| M39 x 4 | 35.00mm |
| M42 x 4.5 | 37.50mm |
| M45 x 4.5 | 40.50mm |
| M48 x 5 | 43.00mm |
| M52 x 5 | 47.00mm |
| M56 x 5.5 | 50.50mm |
| M60 x 5.5 | 54.50mm |
| M64 x 6 | 58.00mm |
m2 tap drill size - Standard Metric
m2 tap drill size = 1.60mm drill
m3 tap drill size - Standard Metric
m3 tap drill size = 2.50mm drill
m4 tap drill size - Standard Metric
m4 tap drill size = 3.30mm drill
m5 tap drill size - Standard Metric
m5 tap drill size = 4.20mm drill
m6 tap drill size - Standard Metric
m6 tap drill size = 5.0mm drill
m8 tap drill size - Standard Metric
m8 tap drill size = 6.80mm drill
m10 tap drill size - Standard Metric
m10 tap drill size = 8.50mm drill
m12 tap drill size - Standard Metric
m12 tap drill size = 10.20mm drill
m14 tap drill size - Standard Metric
m14 tap drill size = 12.00mm drill
m16 tap drill size - Standard Metric
m16 tap drill size = 14.00mm drill
m20 tap drill size - Standard Metric
m20 tap drill size = 17.50mm drill
What size drill bit for m24 tap - Standard Metric
m24 tap drill size = 21.00mm drill
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