Precise USA Size #21 H.S.S. Straight Flute Chucking Reamer, 1-1/8″ Flute Length, Decimal Size .1590″

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• Series: B1-USA
• Tolerance_Cutter Diameter: +.0002″ / -.0000″
• Finish Coating: Bright Finish
• Designed to resize drilled and bored holes.
• Right hand (clockwise rotation) cutting direction.
• Overall length, flute length and shank diameters, are sized proportionally to the cutting diameter to permit maximum rigidity throughout the cutting depth of the tool.
• Combination of flute depth and shank diameter help to ensure adequate space for chips and reduce the contact area to reduce heat build-up.
• Pointed with a 45 chamfered end that forms the cutting edges, when resharpening, this 45 chamfer is the only area that should be ground.
• Easily resharpened.
• Ground from the solid.
• Standard 45 chamfered cutting edges.
• Straight flute design with bright finish.
• Workpiece Material Range: Steel, Non-Ferrous, Cast Iron, Plastics

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