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More Information
Mfg SKU #202-5642
Tool Holder CategoryFace Mill Holder
BrandShars Tool
shank sizeNMTB 50
TIR (inch)0.0004
drawbar thread size1-8UNC
arbor diameter1
Key Width for Face Mill Keyway0.374


  • H6 arbor tolerance to improve cutter chattering and overall cutting tool life
  • T.I.R. 0.0004" measured from NMTB 50 taper to face and arbor

  • Made from alloy steel harden to 54-60 HRc
  • Taper ground to AT3 or better accuracy standard for maximum contact with spindle. This tool holder has used Stotz Air/Electronic Gaging for production and finish inspection. Stotz has been chosen by major aircraft companies as the best and most consistent gaging for tool holder shanks

  • All critical surface are precision ground
  • Each holder comes with a lab certificate on its taper accuracy and runout measurement