Inch

Metric

1"

1 1/4"

3 mm

4 mm

5 mm

6 mm

7 mm

8 mm

9 mm

9.5 mm

10 mm

12 mm

12.7 mm

13 mm

14 mm

15.9 mm

16 mm

18 mm

19 mm

20 mm

22 mm

22.2 mm

25 mm

25.5 mm

Carbide

Carbide-Tipped Steel

Steel

Less than $30

$30 to $50

$50 to $80

$80 to $160

$160 or greater

Aluminum Chromium Nitride (AlCrN) Coated

Aluminum Titanium Nitride (AlTiN) Coated

Carbide Tipped

Diamond Coated

Diamondlike Carbon (DLC) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Aluminum Silicon Nitride (TiAlSiN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Diboride (TiB₂) Coated

Titanium Nitride (TiN) Coated

Uncoated

0.008"

0.01"

0.012"

0.013"

0.014"

0.015"

0.02"

0.021"

0.024"

0.025"

0.028"

0.03"

0.031"

0.045"

0.06"

0.062"

0.09"

0.12"

0.125"

0.19"

0.25"

0.05 mm

0.1 mm

0.15 mm

0.2 mm

0.3 mm

0.5 mm

1 mm

1.5 mm

2 mm

3 mm

4 mm

Intersecting

Spiral

Straight

0°

10° to 43°

15°

15° to 55°

20°

30°

30° to 32°

33°

35°

35° to 38°

36° to 38°

36° to 39°

37° to 39°

38°

40° to 42°

41°

Compliant

Not Compliant

Exempt

Compliant

Not Compliant

EAR99

30°

40°

60°

82°

90°

120°

20°

25°

30°

45°