K&M 120518.200 20 mm HSSE BK-MN Coated 4-Flute End Mill, DIN 844-B, 38 mm Cutting Length, 104 mm Overall Length

In a busy tool and die shop, machinists rely on end mills that can handle tough materials like cast iron and stainless steel while maintaining tight tolerances. The K&M 120518.200 is a 20 mm HSSE end mill with a BK-MN coating, engineered for universal milling applications. Its 4-flute design and DIN 844-B geometry deliver smooth cutting action and reliable chip evacuation, making it a dependable choice for general-purpose machining.

Key specifications

• Cutting diameter: 20.0 mm
• Cutting length: 38 mm
• Overall length: 104 mm
• Shank diameter: 20 mm (cylindrical straight shank)
• Number of flutes: 4
• Material: HSSE (high-speed steel with cobalt)
• Coating: BK-MN (black-manganese)
• Standard: DIN 844-B
• Cutting direction: right-hand
• Manufacturing process: precision ground

Why choose it

The HSSE substrate with cobalt provides enhanced heat resistance and wear resistance compared to standard HSS, allowing higher cutting speeds and longer tool life. The BK-MN coating further improves surface hardness and reduces friction, resulting in better chip flow and protection against built-up edge. Precision grinding ensures consistent geometry and tight tolerances for accurate milling.

Ideal use cases

• Milling cast iron components in automotive and machinery manufacturing
• Machining stainless steel parts for food processing or medical equipment
• Working with non-ferrous metals like aluminum, brass, and copper in general fabrication
• Universal milling operations in tool rooms and maintenance workshops

Good to know

This end mill is suitable for both conventional and climb milling. Its straight shank fits standard collets and end mill holders. For optimal performance, use appropriate cutting parameters based on the workpiece material and machine rigidity.