Choose Insert for Application See threading insert overview on page F8 Select cresting inserts for fully controlled thread form including diameter

Choose Insert for Application See threading insert overview on page F8. Select cresting inserts for fully controlled thread form including diameter control. Cresting inserts eliminate the need for deburring. Non-cresting partial profile inserts can cut a variety of thread pitches. Note insert size for toolholder selection. Step 4 Select Grade and Speed Recommendations for Grade and Speed Selection m/min workpiece material steel stainless steel cast iron non-ferrous metals high-temp alloys insert style chip control or neutral chip control or positive r"\ J neutral positive positive optimum cutting TN6010 TN6010 TN6010 TN6010 conditions 160-750 160-600 230-700 65-400 TN6025 TN6025 TN6025 TN6025 TN6025 130-650 130-450 200-475 160-1150 35-330 Examples Chip Control NT-K or NT-CK (partial profile only) Neutral NT, NT-C, NTF, NTC, NJ, NJF, NDC-V, NA, NDC, NTB-A/B Positive NTP, NTK, NJP, NJK TopThread Threading Example application material workpiece diameter 8 TPI Acme internal right-hand thread alloy steel 114,3mm good cutting conditions feed towards the chuck Recommendation insert grade insert size boring bar gage insert speed infeed passes NA3L8 TN6010 3 A40NER3 N.3L 150 m/min 12 passes In feed recommendations provided in technical data section on pages F88-F91. F7 TopThread Widia Threading Selection Guide Step 3