Sherwood 5230T, Long Slot Drill, 17mm, 2fl, Threaded Shank, High Speed Steel, Bright

Long Series 5230T. Used for milling keyways and slots. Bright finish. Flute type: 30° helix. Manufactured to BS 122: Part 4: 1980. METRIC TOLERANCES: Diameter: ~ up to 3.00. Tolerance: +0.013 -0.033; Diameter: Over 3.00 ~ up to 6.00. Tolerance:+ 0.020 -0.038; Diameter: Over 6.00 ~ up to 10.00. Tolerance: +0.025 -0.046; Diameter: Over 10.00 ~ up to 18.00. Tolerance: +0.033 -0.058; Diameter: Over 18.00 ~ up to 30.00. Tolerance: +0.041 -0.071; Diameter: Over 30.00 ~ . Tolerance: + 0.051 -0.089. *Based on BS122: Part 4: 1980 though specific diameter is not included.