CNC Lathe Carbide Thread Turning Insert 16NR 22ER 27NR APIRD 4API382 383 502 503, KM15 Grade API Standard Threading Insert for Metal Workpieces
This CNC carbide threading insert series covers 16/22/27NR internal and ER external thread models with APIRD profile, available in 4API382, 383, 502, 503 specifications. KM15 grade delivers reliable cutting performance for API standard thread machining on CNC lathes.
Precision ground thread profile ensures high dimensional accuracy and smooth tooth flank finish. The optimized cutting edge geometry achieves stable chip control during threading, effectively reducing burrs and maintaining consistent quality in batch production.
Compatible with standard CNC threading tool holders, these inserts feature excellent wear resistance and long service life. They are widely applied in API thread processing for petroleum, hydraulic and general precision mechanical components.
