M6 Bolt Drill Bit Size at Colleen West blog

M16 x 2.0 14.2mm 35/64 M16 x 1.5 14.7mm M18 x 2.5 15.5mm M18 x 1.5 16.5mm M20 x 2.5 17.5mm M20 x 1.5 18.5mm M22 x 2.5 19.5mm M22 x 1.5 20.5mm M24 x 3.0 21.0mm M24 x 2.0 22.0mm Metric Tap and Drill Bit Size Table 8531 S. Freeway Drive • Macedonia, Ohio 44056 (800) 232 - 2659 • Fax: (330) 468-3302 www.scfastening.com. FASTENING . Created Date:. M16 x 2. 35/64; 76 - 81. Tap Size. Drill Size. Probable % Thread. 3/4 - 10. 21/32. 68 - 72; 3/4 - 16. 11/16; 71 - 77. M20 x 2.5; 11/16. 74 - 78; 7/8 - 9. 49/64;. Drill Size. Nearest . Fraction. To Tap For This Size . Bolt or Screw.4999. 12.7 mm: none. 14 mm - 1.50 pitch.5039. 12.8 mm: none. 14 mm - 1.25 pitch.5156. 33/64.

Metric thread drill and tap chart with detailed information on tap drill sizes and thread sizes.. A rule of thumb is that the right tap drill is around 85% for coarse threads and 90% for fine threads which feature a higher number of threads per axial distance. In our case, the correct tap drill would be the closest to 3.4 mm from below, and that is the 3.3 mm or .13-inch tap drill.