#66 number drill 10/pk

Millimetres

Inches (decimal)

Number size/fraction

.3429mm

.0135"

#80

.3683mm

.0145"

#79

.3969mm

.015625"

1/64"

.4064mm

.016"

#78

.4572mm

.018"

#77

.5mm

.0197"

.508mm

.02"

#76

.5334mm

.021"

#75

.5715mm

.0225"

#74

.6096mm

.024"

#73

.635mm

.025"

#72

.6604mm

.026"

#71

.7112mm

.028"

#70

.74168mm

.0292"

#69

.75mm

.0295"

.7874mm

.031"

#68

.7938mm

.03125"

1/32"

.8128mm

.032"

#67

.8382mm

.033"

#66

.85mm

.0335"

.889mm

.035"

#65

.9144mm

.036"

#64

.9398mm

.037"

#63

.95mm

.0374"

.9652mm

.038"

#62

.9906mm

.039"

#61

1mm

.0394"