MIR 7A60 L22 R0.2 Black High Hardness Carbide Alloy Internal Thread Turning Tool High Coating Small 5A55 Holes Boring Tools
This MIR series internal threading tool is built from solid tungsten carbide and equipped with premium black‑high coating. It is designed for Swiss‑type lathes, capable of machining steel and stainless steel materials up to HRC50 hardness for small‑diameter internal thread production.
Accurately ground 55° and 60° thread‑forming edges deliver stable cutting performance under heavy‑load conditions. The advanced coating greatly lowers friction and wear, effectively resists built‑up edge, and maintains precise thread profile with consistent dimensional repeatability.
Optimized compact geometry fits narrow inner‑bore working space of micro‑parts. Enhanced wear resistance extends tool service life, reduces frequent tool replacement, and improves overall productivity for mass‑production of miniature threaded metal components.
