For clearance drill diameter: (Pg 7 thru Pg 13.5 add 0.1 ...

A major advantage for users in electrical industry and electrical wohlesalers is that 10 Pg sizes are replaced by 8 metric sizes. Therefore a new assignment of the sealing ranges to the rated sizes of the cable glands must be made (figure 1). ... Tap Drill Diameter mm. Clearance Drill Diameter mm. 12x1.5. M. 12.00. 1.50. 0.217. 11.026. 10.160 ... ................
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