This part of GB/T 6117 specifies the basic requirements for the type, size and marking of Morse taper shank end mills. This part applies to end mills with a Morse taper shank with a diameter greater than 5 mm to 75 mm.
GB/T 6117.2-2010 Referenced Document
GB/T 1443 Self-clamping cones for machine tools and tool holders*, 2016-09-01 Update
GB/T 4133 The type and dimensions for positive drive of morse tapers
GB/T 6117.2-2010 history
2010GB/T 6117.2-2010 End mills.Part 2:Milling cutters with Morse taper shanks
1996GB/T 6117.2-1996 End mills--Part 2: Milling cutters with Morse taper shanks