TopThread™ inserts are available in TN6010™ and TN6025™ grades to withstand the demands placed on the cutting edge of the threading insert. The versatility of the TopThread steel enables you to use both threading and grooving inserts in the same toolholder. The Simple Solution With the WIDIA™ TopThread solution, there is no need to worry about costly setup mistakes. TopThread insert selection is easy, quick, and enables accurate indexing to keep your machine spindle turning. NOTE: Holders are designed to locate inserts • Rigid design for increased insert stability during threading applications. inclined to 3° to provide back clearance down open side. • Good quality threads, improved tool life, and improved surface finishes. • Locking forces in three directions for superior resistance to tangential force. • Unique 3° insert relief angle for back clearance. • Available in partial profile inserts for 60° thread forms. widia.com F5