TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD

0-80

56

.0465

83

.0015

.0480

74

3/64

.0469

81

.0015

.0480

71

1-64

54

.0550

89

.0015

.0565

81

53

.0595

67

.0015

.0610

59

1-72

53

.0595

75

.0015

.0610

67

1/16

.0625

58

.0015

.0640

50

2-56

51

.0670

82

.0017

.0687

74

50

.0700

69

.0017

.0717

62

49

.0730

56

.0017

.0747

49

2-64

50

.0700

79

.0017

.0717

70

49

.0730

64

.0017

.0747

56

3-48

48

.0760

85

.0019

.0779

78

5/64

.0781

77

.0019

.0800

70

47

.0785

76

.0019

.0804

69

46

.0810

67

.0019

.0829

60

45

.0820

63

.0019

.0839

56

3-56

46

.0810

78

.0019

.0829

69

45

.0820

73

.0019

.0839

65

44

.0860

56

.0020

.0880

47

4-40

44

.0860

80

.0020

.0880

74

TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD

43

.0890

71

.0020

.0910

65

42

.0935

57

.0020

.0955

51

3/32

.0938

56

.0020

.0958

50

4-48

42

.0935

68

.0020

.0955

61

3/32

.0938

68

.0020

.0958

60

41

.0960

59

.0020

.0980

52

5-40

40

.0980

83

.0023

.1003

76

39

.0995

79

.0023

.1018

71

38

.1015

72

.0023

.1038

65

37

.1040

65

.0023

.1063

58

5-44

38

.1015

79

.0023

.1038

72

37

.1040

71

.0023

.1063

63

36

.1065

63

.0023

.1088

55

6-32

37

.1040

84

.0023

.1063

78

36

.1065

78

.0023

.1088

72

7-64

.1094

70

.0026

.1120

64

35

.1100

69

.0026

.1126

63

34

.1110

67

.0026

.1136

60

33

.1130

62

.0026

.1156

55

6-40

34

.1110

83

.0026

.1136

75

TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD

33

.1130

77

.0026

.1156

69

32

.1160

68

.0026

.1186

60

8-32

29

.1360

69

.0029

.1389

62

28

.1405

58

.0029

.1434

51

8-36

29

.1360

78

.0029

.1389

70

28

.1405

68

.0029

.1434

57

9-64

.1406

68

.0029

.1435

57

10-24

27

.1440

85

.0032

.1472

79

26

.1470

79

.0032

.1502

74

25

.1495

75

.0032

.1527

69

24

.1520

70

.0032

.1552

64

23

.1540

67

.0032

.1572

61

10-32

5/32

.1563

83

.0032

.1595

75

22

.1570

81

.0032

.1602

73

21

.1590

76

.0032

.1622

68

20

.1610

71

.0032

.1642

64

19

.1660

59

.0032

.1692

51

12-24

11/64

.1719

82

.0035

.1754

75

17

.1730

79

.0035

.1765

73

16

.1770

72

.0035

.1805

66

TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD

15

.1800

67

.0035

.1835

60

14

.1820

63

.0035

.1855

56

12-28

16

.1770

84

.0035

.1805

77

15

.1800

78

.0035

.1835

70

14

.1820

73

.0035

.1855

66

13

.1850

67

.0035

.1885

59

3/16

.1875

61

.0035

.1910

54

1/4-20

9

.1960

83

.0038

.1998

77

8

.1990

79

.0038

.2028

73

7

.2010

75

.0038

.2048

70

13/64

.2013

72

.0038

.2069

66

6

.2040

71

.0038

.2078

65

5

.2055

69

.0038

.2093

63

4

.2090

63

.0038

.2128

57

1/4-28

3

.2130

80

.0038

.2168

72

7/32

.2188

67

.0038

.2226

59

2

.2210

63

.0038

.2248

55

5/16-18

F

.2570

77

.0038

.2608

72

G

.2610

71

.0041

.2651

66

17/64

.2656

65

.0041

.2697

59

TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD

H

.2660

64

.0041

.2701

59

5/16-24

H

.2660

86

.0041

.2701

78

I

.2720

75

.0041

.2761

67

J

.2770

66

.0041

.2811

58

3/8-16

5/16

.3125

77

.0044

.3169

72

O

.3160

73

.0044

.3204

68

P

.323

64

.0044

.3274

59

3/8-24

21/64

.3281

87

.0044

.3325

79

Q

.3320

79

.0044

.3364

71

R

.3390

67

.0044

.3434

58

7/16-14

T

.3580

86

.0046

.3626

81

23/64

.3594

84

.0046

.3640

79

U

.3680

75

.0046

.3726

70

3/8

.3750

67

.0046

.3796

62

V

.3770

65

.0046

.3816

60

7/16-20

W

.3860

79

.0046

.3906

72

25/64

.3906

72

.0046

.3952

65

X

.3970

62

.0046

.4016

55

1/2-13

27/64

.4219

78

.0047

.4266

73

7/16

.4375

63

.0047

.4422

58

TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD

1/2-20

29/64

.4531

72

.0047

.4578

65

9/16-12

15/32

.4688

87

.0048

.4736

82

31/64

.4844

72

.0048

.4892

68

9/16-18

1/2

.500

87

.0048

.5048

80

33/64

.5156

65

.0048

.5204

58

5/8-11

17/32

.5313

79

.0049

.5362

75

35/64

.5469

66

.0049

.5518

62

5/8-18

9/16

.5625

87

.0049

.5674

80

37/64

.5781

65

.0049

.5831

58

3/4-10

41/64

.6406

84

.0050

.6456

80

21/32

.6563

72

.0050

.6613

68

3/4-16

11/16

.6875

77

.0050

.6925

71

7/8-9

49/64

.7656

76

.0052

.7708

72

25/32

.7812

65

.0052

.7864

61

7/8-14

51/64

.7969

84

.0052

.8021

79

13/16

.8125

67

.0052

.8177

62

1-8

55/64

.8594

87

.0059

.8653

83

7/8

.875

77

.0059

.8809

73

57/64

.8906

67

.0059

.8965

64

TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD

29/32

.9063

58

.0059

.9122

54

1-12

29/32

.9063

87

.0059

.9122

81

59/64

.9219

72

.0060

.9279

67

15/16

.9375

58

.0060

.9435

52

1-14

59-64

.9219

84

.0060

.9279

78

15/16

.9375

67

.0060

.9435

61

1 1/8-7

31/32

.9688

84

.0062

.9750

81

63/64

.9844

76

.0067

.9911

72

1

1.000

67

.0070

1.007

64

1 1/64

1.0156

59

.0070

1.0226

55

1 1/8-12

1 1/32

1.0313

87

.0071

1.0384

80

1 3/64

1.0469

72

.0072

1.0541

66

1 1/4-7

1 3/32

1.0938

84

1 7/64

1.1094

76

1 1/8

1.125

67

1 1/4-12

1 5/32

1.1563

87

1 11/64

1.1719

72

1 3/8-6

1 3/16

1.1875

87

1 13/64

1.2031

79

1 7/32

1.2188

72

1 15/64

1.2344

65

1 3/8-12

1 9/32

1.2813

87

1 19/64

1.2969

72

1 1/2-6

1 5/16

1.3125

87

1 21/64

1.3281

79

1 11/32

1.3438

72

1 23/64

1.3594

65

1 1/2-12

1 13/32

1.4063

87

1 27/64

1.4219

72

TAP

TAP DRILL

Decimal Drill Size

Theo. % Of Thread

Probable Oversize

Probable Hole Size

% Of THREAD