RUKO FLS-DIN373-M-6 Kernloch Counterbore Cutter, HSS-E Co5, M6, 10.5 mm Cutting Diameter, 80 mm Length

With a cutting diameter of 10.5 mm and a pilot diameter of 6.6 mm, this RUKO counterbore cutter delivers precise through holes for M6 screws in steel, stainless steel, cast iron, non-ferrous metals, and plastics. The HSS-E Co5 high-speed steel with 5% cobalt ensures high wear resistance and heat hardness, even under demanding conditions.

Overview

The RUKO FLS-DIN373-M-6 is a counterbore cutter manufactured to DIN 373 standards. It features a cylindrical shank with h8 tolerance for secure clamping in standard collets or chucks. The 3-flute design promotes efficient chip evacuation and a smooth cutting action. With an overall length of 80 mm and a cutting length of 18 mm, it is suitable for a wide range of counterboring tasks.

What stands out

• HSS-E Co5 cobalt steel for high performance and durability
• DIN 373 compliant geometry for reliable counterboring
• 3 flutes for effective chip removal
• Uncoated surface for versatility across materials
• Right-hand cutting direction for standard machining

Technical details

• Tool type: Counterbore cutter
• Standard: DIN 373
• Screw size: M6
• Hole type: Through hole (Kernloch)
• Material: HSS-E Co5
• Cutting diameter (d2): 10.5 mm
• Pilot diameter (d1): 6.6 mm
• Shank diameter (d3): 10 mm
• Overall length (l1): 80 mm
• Cutting length (l2): 18 mm
• Number of flutes: 3
• Coating: Uncoated
• Shank type: Cylindrical shank
• Cutting direction: Right-hand cutting
• Application materials: Steel, stainless steel, cast iron, non-ferrous metals, plastics
• Shank tolerance: h8

Our verdict

A robust and precise counterbore cutter for professionals who require reliable performance on a variety of materials. The cobalt steel construction and DIN 373 compliance make it a dependable choice for machining M6 through holes.