Morse Taper Dimensions

MT Size D1 (mm) D2 (mm) L2 (mm) Taper (μm/mm) Half-Angle L1 (mm) L3 (mm) H (mm) R (mm)
0 9.045 6.401 2 52.051 1°29'26" 59.531 6.350 3.967 4
1 12.065 9.373 53.975 49.882 1°25'43" 65.087 9.525 5.159 5
2 17.780 14.529 65.087 49.951 1°25'49" 79.375 11.112 6.350 6
3 23.825 19.761 80.962 50.196 1°26'16" 98.425 14.287 7.938 7
4 31.267 25.908 103.188 51.938 1°29'15" 123.825 15.875 12.159 8
4.5 38.100 32.156 114.300 51.999 1°29'22" N/A N/A N/A N/A
5 44.399 37.465 131.762 52.626 1°30'26" 155.575 19.050 15.875 10
6 63.348 53.746 184.150 52.138 1°29'36" 217.487 28.575 19.050 13
7 83.058 69.850 10 51.999 1°29'22" 141.275 34.925 28.575