Thread Turning Insert Laydown ANSI Number 16 ER 12 UN BMA Thread Profile UN Pitch 12 TPI Thread Type External Cutting Direction Right Hand Insert Type External Lay Down Chip-Breaker Top Rake Stainless Steel Super Alloys Grade BMA No of Edges 3 Insert Size 16 Coating TiAlN Mounting Style Screw Rake Positive ISO Number 16 ER 12 UN BMA Insert Shape Triangle Inscribed Circle 3/8 Toolholder 4PMY2