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

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

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

Compliant

Not Compliant

Exempt

EAR99

30°

40°

60°

82°

90°

120°

20°

25°

30°

45°