MIR 4A60 L10 R0.12 Black High Hardness Carbide Alloy Boring Tool High Coating Spiral Flute Non-Coolant Cat40 Taper 55 Point
MIR 4A60 L10 R0.12 small‑bore internal threading tool is made of solid tungsten carbide with premium black‑high coating. It features 4mm rigid shank, 60‑degree thread angle and 10mm effective cutting depth for Swiss‑type lathes to machine steel and stainless steel up to HRC50.
Precision‑ground 60° threading edge together with R0.12 nose radius delivers precise thread profile inside tiny holes. The black‑high coating lowers cutting friction and prevents built‑up edge, securing consistent dimensional accuracy and excellent surface finish during long‑time continuous cutting.
Compact slim body fits the narrow inner‑hole space of miniature components perfectly. Improved wear resistance extends tool service life, reduces frequent tool replacements, and raises overall throughput for mass‑producing precision micro‑threaded metal workpieces.
