M10 Straight Shank Counterbore End Mill Four Flute HSS Drill Bit For Metalworking Pro Grade Heavy Duty 74mm Overall Length 12mm Shank 17.5mm Cutting Edge 10.3mm Guide Post Diameter 1 Piece

Pro-Grade M10 Straight Shank Counterbore End Mill, 1 pc
✔️ HSS 4-flute, 12mm shank, 17.5mm cutting edge, 74mm OAL

This M10 straight shank counterbore end mill is a heavy-duty HSS cutter designed for metalworking. It creates precise countersinks and spotfaces, ideal for screw seating on metal workpieces in milling or CNC setups.

✅ Material: High-Speed Steel (HSS) with four cutting edges
✅ Shank diameter: 12mm (0.472 in); cutting edge diameter: 17.5mm (0.69 in); guide post diameter: 10.3mm (0.41 in)
✅ Overall length: approx 74mm (2.91 in)
✅ 4-flute design enables higher feed rates and smoother finishes
✅ Precision countersinking for flat bottoms and screw seating
✅ Toughness and impact resistance surpass carbide in intermittent cuts

💡 What is a counterbore end mill used for in metalworking? This handy tool creates precise flat-bottom recesses for screw seating and spotfaces.

• High-speed steel construction offers toughness for intermittent cuts
• Four-flute design enables higher feed rates and smoother finishes
• 12mm straight shank fits most standard milling machines
• 74mm overall length helps reach recessed areas in compact setups