The machine reamer B170 DIN 212 Form B with a nominal diameter of 3.98 mm is a precise tool designed for machining various materials. Made from high-quality HSS-E (high-speed steel), this reamer offers excellent performance and durability. It features a slight left-hand spiral that allows for efficient chip removal. The reamer has an overall length of 75 mm and a cutting length of 19 mm, making it ideal for applications with a working depth of up to 43 mm. Compliance with the DIN 212 standard ensures high accuracy and a diameter tolerance of 0/+0.004 mm, which is crucial for producing precise fits within tolerances 4N10 or 4N11. This reamer is suitable for machining carbon steel, steel alloys, cast iron, aluminum, and copper, as well as their alloys.

• Slight left-hand spiral for improved chip removal
• High-speed steel (HSS-E) for high performance and durability
• Compliance with DIN 212 standard for precise machining
• Diameter tolerance of 0/+0.004 mm for exact fits
• Suitable for a variety of materials, including steel and aluminum.