5 Pack Three Eighths Inch Carbide Square End Mills Set Pro Grade HRC55 Tungsten Steel End Mills Four Flutes For Alloy And Hardened Steels CNC Milling Cutters Durable High Wear Resistance End Mill Bits

5 Pack 3/8 inch Carbide End Mills for Hardened Steel
✔️ Five 3/8 inch carbide square end mills, TiSiN coated

These 5 pcs of 3/8 inch carbide square end mills are designed for CNC milling and metalworking, especially when working with hardened steels and alloys. The TiSiN coating boosts heat resistance and tool life, making them ideal for aggressive cutting in pre-hardened materials.

✅ 5 pcs set of 3/8 inch carbide square end mills (diameter 9.53 mm)
✅ Micro grain carbide with TiSiN coating for wear resistance and hot hardness
✅ HRC 55 hardness suitable for carbon steels, alloy steels, pre-hardened steels
✅ 4-flute design provides rigidity for shallow slots, profile milling, finishing
✅ 3/8 inch shank matches standard CNC tooling (9.53 mm)

💡 What is the best use of a 3/8 inch carbide end mill for hardened steels? This handy tool shines in metalworking where precision and durability matter.
- For tough materials, maintain proper feeds and speeds to extend tool life
- Use coolant to reduce heat and prevent work hardening
- Ideal for shallow slots, profile milling, and finishing passes
- TiSiN coating helps resist oxidation at high temps