GSF - Self-Lock™

Thread Mill & Chamfer

Solid carbide GSF style thread mills can reduce cycle time and manufacturing costs by combining the threading and chamfering process into one tool. GSF thread mills provide complete process flexibility. Thread milling allows for in-process thread profile programming adjustments while a combined chamfering feature provides concentric location and full control of chamfer depths. Tool costs can be reduced by combining operations and costly part repairs from broken taps are eliminated. 


  • Premium sub-micro grain carbide substrate
  • Each tool is designed for one single thread size, with corrected thread profile
  • GSF thread mills require pre-drilled thread hole
  • For the production of internal Self-Lock threads
  • Special made tooling available upon request
  • The Self-Lock thread profile is an Emuge standard profile for locking thread forms
  • Thread gaging is accomplished with Emuge thread gages

GSF - Self-Lock™ Products