Model Specification of Straight Handle Twist Drill

straight handle twist drill, generally divided into national standard and American standard, national standard as long as the decimal point after the Arabic number does not exceed two digits, such as 10.0 10.2 10.25. US standard, main specifications 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64, 1/2. In addition, there are some special drills, such as flanging drills, some non-standard drills produced according to customer requirements!

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