GENERAL TECHNICAL INFORMATION TURNING INSERT DESIGNATION SYSTEM 1 SHAPE 2 CLEARANCE ANGLE 4 TYPE C D E A G M N B H K R R B, W T.H S T V C P Special Z, X W 3 TOLERANCE Tolerance On m On d Diameter of IC Class M Class U Class M Class U .250 ±0.003 ±0.005 ±0.002 ±0.003 .375 ±0.003 ±0.005 ±0.002 ±0.003 .500 ±0.005 ±0.008 ±0.003 ±0.005 Class m t d A ±0.0002 ±0.001 ±0.001 .625 ±0.006 ±0.011 ±0.004 ±0.007 F ±0.0002 ±0.001 ±0.0005 C ±0.0005 ±0.001 ±0.001 .750 ±0.006 ±0.011 ±0.004 ±0.007 H ±0.0005 ±0.001 ±0.0005 E ±0.001 ±0.001 ±0.001 1.000 ±0.007 ±0.015 ±0.005 ±0.010 G ±0.001 ±0.005 ±0.001 M ±0.003 - ±0.007 ±0.005 ±0.002 - ±0.005 1.250 ±0.007 ±0.015 ±0.005 ±0.010 U ±0.005 - ±0.015 ±0.005 ±0.003 - ±0.010 876