MT - ER COLLET CHUCK A ➚ A .00012 AT3 Taper 58-60 HRc Ra 4µin L1 L Ref T A D A G J Designation Range L L1 D J G T MT2 ER20x1.909 .022-.514 1.909 2.520 1.339 M10 3/8-16 .866 MT2 ER25x2.008 .041-.632 2.008 2.520 1.654 M10 3/8-16 1.102 MT3 ER32x2.717 .080-.789 2.717 3.189 1.968 M12 1/2-13 .945 MT3 ER40x3.150 .120-1.025 3.150 3.189 2.480 M12 1/2-13 .945 MT4 ER32x2.382 .080-.789 2.382 4.035 1.968 M16 5/8-11 1.260 MT4 ER40x3.193 .120-1.025 3.193 4.035 2.480 M16 5/8-11 1.260 MT4 ER50x4.232 .396-1.338 4.232 4.035 3.070 M16 5/8-11 1.260 MT5 ER40x3.445 .102-1.025 3.445 5.098 2.480 M28x1.5 3/4-10 1.772 MT5 ER50x3.346 .396-1.338 3.346 5.098 3.070 M28x1.5 3/4-10 1.772 MT6 ER50x3.465 .396-1.338 3.465 7.165 3.070 M36x1.5 1- 8 2.362 835