Transcription of Clearance Hole Drill Chart - Find Specialty Carbide End ...
1 1 5 3 7 29 15 1 33 17 9 37 19 5 41 21 11 45 23 3 49 25 13 53 27 7 57 29 15 61 31 SizeClose FitFree FitNo. or DiameterDiameter EquivalentDrill SizeDecimal EquivalentDrill SizeDecimal EquivalentClearance hole Drill ChartThe Chart below displays a variety of common screw sizes and their Clearance hole recommendations. The table provides two different class of fits, Close Fit and Free Fit. Each number or diameter of screw size has its own Close Fit or Free Fit, independent of threads per inch. Each fit is tolerancedso that a threaded object can pass through the hole while the head of the object will not. Free fit has a larger allowance while Close Fithas a tighter allowance.
