RUKO FLS-DIN373-M-5-kernloch upotuspora

Counterbore for hexagon socket head cap screws, precision ground from HSS-E with a bright finish. Creates clean, accurate counterbores in steel, cast iron, non-ferrous metals, and plastics.

Advantages

Three-flute design ensures smooth cutting and efficient chip evacuation. Cobalt alloyed high-speed steel provides high wear resistance and heat resistance for extended tool life. Cylindrical shank fits standard drill chucks and collets.

Suitable for

• Creating counterbores for M5 hexagon socket head cap screws
• Machining steel, cast iron, non-ferrous metals, and plastics
• Use in drilling machines, milling machines, and lathes

Key specifications

• Tool type: Counterbore
• Standard: DIN 373
• Screw size compatibility: M5
• Material: HSS-E (High-Speed Steel with Cobalt)
• Counterbore diameter (d2): 9.0 mm
• Pilot diameter (d1): 5.5 mm
• Shank diameter (d3): 6.0 mm
• Overall length (l1): 80 mm
• Pilot length (l2): 12 mm
• Number of flutes: 3
• Cutting direction: Right-hand
• Shank type: Cylindrical
• Finish: Bright
• Head angle: 180°
• Cooling: External

Recommendations

Use with cutting fluid for best results in steel. Ensure pilot fits the pre-drilled hole for accurate centering.