TaeguTec Cutting Tools - Metal Working Tools - IR/L-NPT : 6111445 - 16IRB 11.5 NPT
H16160EN11BSP External and Internal Carbide Thread Milling Cutter 11 TPI 1"x11 BSP Associated Production Tools
NPT 1"x11.5 - 11.5TPI Pitch NPT Helical Flute Internal Carbide Thread Mill with Radial Coolant - (Helicool R HCR Series - Vardex)
Simply buy 27IR 11.5 NPT 3M IC908 Internal NPT (National Pipe Threads) Full Profile Laydown Threading Inserts for Steam, Gas and Water Pipes | Hoffmann Group
16ER 11.5 NPT T350 External Threading Insert for General Use
Thread Turning Laydown Standard Inserts IC3/8" EX LH 11.5 TPI UN VKX Grade