RUKO DIN 373 upotuspora M12 morsekartio 2 HSS

Precision DIN 373 counterbore for cylindrical head screws, engineered to create clean, flat-bottomed recesses with a Morse Taper 2 shank for secure tool holding.

Advantages

Manufactured from high-speed steel (HSS) with a bright finish, this counterbore offers excellent wear resistance and long tool life. Its three-flute design ensures efficient chip evacuation and smooth cutting action in steel, cast iron, non-ferrous metals, and plastics.

Suitable for

• Counterboring holes for M12 cylindrical head screws
• Creating flat-bottomed recesses for bolt heads
• Use in drilling machines and milling machines with Morse Taper 2 spindle

Key specifications

• Standard: DIN 373
• Nominal screw size: M12
• Counterbore diameter (d1): 18.0 mm
• Pilot diameter (d2): 13.0 mm
• Shank type: Morse Taper 2 (MK2)
• Material: High Speed Steel (HSS)
• Number of flutes: 3
• Total length: 160 mm
• Pilot length: 20 mm
• Cutting direction: Right-hand

Recommendations

Use with appropriate cutting fluid for extended tool life. Ensure the Morse taper is clean and properly seated before operation.