DRILL SIZE DECIMAL EQUIVALENT & TAP DRILL CHART

嚜澳RILL SIZE DECIMAL EQUIVALENT & TAP DRILL CHART

DECIMAL EQUIVALENT CHART

DRILL

SIZE

MM









80

79

1/64

78

77



76

75

74



73

72

71



70

69



68

1/32



67

66

65



64

63

62

61



60

59

58

57

56

3/64

55

54

0.10

0.20

0.25

0.30

0.34

0.37

0.40

0.41

0.46

0.50

0.51

0.53

0.57

0.60

0.61

0.64

0.66

0.70

0.71

0.74

0.75

0.79

0.79

0.80

0.81

0.84

0.89

0.90

0.91

0.94

0.97

0.99

1.00

1.02

1.04

1.07

1.09

1.18

1.19

1.32

1.40

EQUIVALENT

DRILL

SIZE

MM

EQUIVALENT

.0039

.0079

.0098

.0118

.0135

.0145

.0156

.0160

.0180

.0197

.0200

.0210

.0225

.0236

.0240

.0250

.0260

.0276

.0280

.0292

.0295

.0310

.0313

.0315

.0320

.0330

.0350

.0354

.0360

.0370

.0380

.0390

.0394

.0400

.0410

.0420

.0430

.0465

.0469

.0520

.0550

53

1/16

52

51

50

49

48

5/64

47



46

45

44

43

42

3/32

41

40

39

38

37

36

7/64

35

34

33

32



31

1/8

30

29

28

9/64

27

26

25

24

23

5/32

22

1.51

1.59

1.61

1.70

1.78

1.85

1.93

1.98

1.99

2.00

2.06

2.08

2.18

2.26

2.37

2.38

2.44

2.50

2.53

2.58

2.64

2.71

2.78

2.79

2.82

2.87

2.95

3.00

3.05

3.18

3.26

3.45

3.57

3.57

3.66

3.73

3.80

3.86

3.91

3.97

3.99

.0595

.0625

.0635

.0670

.0700

.0730

.0760

.0781

.0785

.0787

.0810

.0820

.0860

.0890

.0935

.0938

.0960

.0980

.0995

.1015

.1040

.1065

.1094

.1100

.1110

.1130

.1160

.1181

.1200

.1250

.1285

.1360

.1405

.1406

.1440

.1470

.1495

.1520

.1540

.1562

.1570

DECIMAL

DECIMAL

DRILL

SIZE



21

20

19

18

11/64

17

16

15

14

13

3/16

12

11

10

9



8

7

13/64

6

5

4

3

7/32

2

1

A

15/64



B

C

D

1/4

E

F

G

17/64

H

I



MM

DECIMAL

EQUIVALENT

4.00

4.04

4.09

4.22

4.31

4.37

4.39

4.50

4.57

4.62

4.70

4.76

4.80

4.85

4.91

4.98

5.00

5.05

5.11

5.16

5.18

5.22

5.31

5.41

5.56

5.61

5.79

5.94

5.95

6.00

6.05

6.15

6.25

6.35

6.35

6.53

6.63

6.75

6.76

6.91

7.00

.1575

.1590

.1610

.1660

.1695

.1719

.1730

.1770

.1800

.1820

.1850

.1875

.1890

.1910

.1935

.1960

.1968

.1990

.2010

.2031

.2040

.2055

.2090

.2130

.2188

.2210

.2280

.2340

.2344

.2362

.2380

.2420

.2460

.2500

.2500

.2570

.2610

.2656

.2660

.2720

.2756

DRILL

SIZE

J

K

9/32

L

M

19/64

N

5/16



O

P

21/64

Q

R

11/32

S



T

23/64

U

3/8

V

W

25/64



X

Y

13/32

Z

27/64



7/16

29/64

15/32



31/64

1/2

33/64

17/32

35/64

MM

7.04

7.14

7.14

7.37

7.49

7.54

7.67

7.94

8.00

8.03

8.20

8.33

8.43

8.61

8.73

8.84

9.00

9.09

9.13

9.35

9.53

9.56

9.80

9.92

10.00

10.08

10.26

10.32

10.49

10.72

11.00

11.11

11.51

11.91

12.00

12.30

12.70

13.00

13.10

13.49

13.89

DECIMAL

EQUIVALENT

.2770

.2810

.2812

.2900

.2950

.2969

.3020

.3125

.3150

.3160

.3230

.3281

.3320

.3390

.3438

.3480

.3543

.3580

.3594

.3680

.3750

.3770

.3860

.3906

.3937

.3970

.4040

.4062

.4130

.4219

.4331

.4375

.4531

.4688

.4724

.4844

.5000

.5118

.5156

.5312

.5469

DRILL

SIZE



9/16

37/64



19/32

39/64

5/8



41/64

21/32



43/64

11/16

45/64



23/32

47/64



3/4

49/64

25/32



51/64

13/16



53/64

27/32

55/64



7/8

57/64



29/32

59/64

15/16



61/64

31/32



63/64

1"

MM

14.00

14.29

14.68

15.00

15.08

15.48

15.88

16.00

16.27

16.67

17.00

17.07

17.46

17.86

18.00

18.26

18.65

19.00

19.05

19.45

19.84

20.00

20.24

20.64

21.00

21.03

21.43

21.84

22.00

22.23

22.62

23.00

23.02

23.42

23.81

24.00

24.21

24.61

25.00

25.00

25.40

DECIMAL

EQUIVALENT

.5512

.5625

.5781

.5906

.5938

.6094

.6250

.6299

.6406

.6562

.6693

.6719

.6875

.7031

.7087

.7188

.7344

.7480

.7500

.7656

.7812

.7874

.7969

.8125

.8268

.8281

.8438

.8594

.8661

.8750

.8906

.9055

.9062

.9219

.9375

.9449

.9531

.9688

.9842

.9844

1.0000

TAP DRILL CHART

Imperial has made a concerted effort

to provide accurate information in its

catalog and on its website, however

Imperial assumes no responsibility for

the accuracy of the information. All

information published by Imperial in

its catalogs, marketing literature, and

on its website is provided ※as is§

without warranty, expressed or

implied. Imperial and its vendors

disclaim all warranties, expressed or

implied including, without limitation,

warranties of merchantability and

fitness for a particular purpose.

TAP

SIZE

0 每 80

M1.6 x .35

1 每 64

M2 x .4

1 每 72

2 每 56

2 每 64

M2.5 x .45

3 每 48

3 每 56

4 每 40

4 每 48

M3 x .5

5 每 40

5 每 44

M3.5 x .6

6 每 32

6 每 40

M4 x .7

8 每 32

8 每 36

10 每 24

DRILL

SIZE

3/64

1.25 mm

53

1/16

53

51

50

2.05 mm

5/64

46

44

42

40

39

38

33

36

33

3.25 mm

29

29

25

PROBABLE

% THREAD

71 每 81

67 每 77

59 每 67

72 每 79

67 每 75

62 每 69

70 每 79

69 每 77

70 每 77

69 每 78

65 每 71

61 每 68

70 每 79

65 每 72

63 每 71

72 每 81

71 每 78

69 每 77

74 每 82

62 每 69

70 每 78

69 每 75

PHONE: 1-800-558-2808

TAP

SIZE

10 每 32

M5 x .8

12 每 24

12 每 28

M6 x 1

1/4 每 20

1/4 每 28

5/16 每 18

5/16 每 24

M8 x 1.25

3/8 每 16

3/8 每 24

M10 x 1.5

7/16 每 14

7/16 每 20

M12 x 1.75

1/2 每 13

1/2 每 20

M14 x 2

9/16 每 12

9/16 每 18

5/8 每 11

DRILL

SIZE

21

4.2 mm

17

15

10

7

3

F

I

6.7 mm

5/16

Q

8.4 mm

U

25/64

13/32

27/64

29/64

15/32

31/64

33/64

17/32

PROBABLE

% THREAD

68 每 76

69 每 77

66 每 72

70 每 78

76 每 84

70 每 75

72 每 80

72 每 77

67 每 75

74 每 80

72 每 77

71 每 79

76 每 82

70 每 75

65 每 72

69 每 74

73 每 78

65 每 72

76 每 81

68 每 72

58 每 65

75 每 79

FAX: 1-800-553-8769

TAP

SIZE

5/8 每 18

M16 x 2

3/4 每 10

3/4 每 16

M20 x 2.5

7/8 每 9

7/8 每 14

M24 x 3

1每8

1 每 12

1 每 14

1-1/8 每 7

1/18 每 12

M30 x 3.5

1-1/4 每 7

1-1/4 每 12

1-3/8 每 6

1-3/8 每 12

M36 x 4

1-1/2 每 6

1-1/2 每 12

DRILL

SIZE

37/64

35/64

21/32

11/16

11/16

49/64

13/16

53/64

7/8

59/64

15/16

63/64

1-3/64

1-3/64

1-7/64

1-11/64

1-7/32

1-19/64

1-1/4

1-11/32

1-27/64

PROBABLE

% THREAD

58 每 65

76 每 81

68 每 72

71 每 77

74 每 78

72 每 76

62 每 67

72 每 76

73 每 77

67 每 72

61 每 67

72 每 76

66 每 72

75

76

72

72

72

82

72

72

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