| | | | . | Standard Counter-Bore Drill Diameter and Depth | | | . | SCREW | CB DIA | DEPTH | . | #0 | 1/8 | 0.060 | . | #2 | 3/16 | 0.086 | . | #4 | 7/1 | 0.112 | . | #5 | 1/4 | 0.125 | . | #6 | 9/1 | 0.138 | . | #8 | 5/16 | 0.164 | . | #10 | 3/8 | 0.190 | . | 1/4 | 7/16 | 0.250 | . | 5/16 | 17/32 | 0.312 | . | 3/8 | 5/8 | 0.375 | . | 7/16 | 23/32 | 0.438 | . | 1/2 | 13/16 | 0.500 | . | These values are for "standard" screws. Check to ensure that the screws used in your application are consistent with the tabulated value. | | |
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