RUKO FLS-DIN373 upotuspora M18 MK3 HSS DIN 373

For clean, precise countersinking in tough materials, this RUKO countersink bit delivers a 28 mm cutting diameter with a Morse Taper 3 shank, engineered for cylindrical head screws M18.

Overview

The RUKO FLS-DIN373-mittel-M-18-MK3 is a high-speed steel (HSS) countersink manufactured to DIN 373 standards. It features a pilot diameter of 18 mm and an overall length of 140 mm, with a pilot length of 30 mm. The three-flute design ensures smooth chip evacuation and a bright, uncoated finish.

What stands out

• Ground from solid HSS for durability
• Morse Taper 3 shank for secure tool holding
• Right-hand cut with h8 tolerance on cutting diameter
• Suitable for steel, cast iron, and non-ferrous metals

Technical details

• Tool Type: Countersink
• Standard: DIN 373
• Material: High-Speed Steel (HSS)
• Screw Size Compatibility: M18
• Cutting Diameter (d1): 28 mm
• Pilot Diameter (d2): 18 mm
• Overall Length (L1): 140 mm
• Pilot Length (L2): 30 mm
• Number of Flutes: 3
• Cutting Direction: Right-hand cut
• Surface Finish: Bright (uncoated)
• Tolerance (d1): h8
• Manufacturing Process: Ground from solid
• Coolant Through: No

Our verdict

A professional-grade countersink for heavy-duty applications, offering precision and longevity in a single tool.