Nominal
Diameter

Major
Diameter
Inch

Major
Diameter
mm

Minor Diamter
Nut
mm

Tapping
Drill Size
mm

TPI

Pitch
mm

G 1/16"

0.063

7.722

6.837

6.561

28

0.907

G 1/8"

0.125

9.728

8.841

8.565

28

0.907

G 1/4"

0.250

13.157

11.863

11.445

19

1.337

G 3/8"

0.375

16.662

15.389

14.950

19

1.337

G 1/2"

0.500

20.955

19.200

18.633

14

1.814

G 3/4"

0.750

26.441

24.772

24.120

14

1.814

G 1"

1.000

33.249

31.014

30.292

11

2.309

G 1 1/4"

1.250

41.910

39.819

38.953

11

2.309

G 1 1/2"

1.500

47.803

45.712

44.846

11

2.309

G 2"

2.000

59.614

57.722

56.657

11

2.309

G 2 1/2"

2.500

75.184

73.391

72.227

11

2.309

G 3"

3.000

87.884

86.289

84.927

11

2.309

G 4"

4.000

113.030

111.733

110.073

11

2.309

G 5"

5.000

138.430

137.332

135.473

11

2.309

G 6"

6.000

163.830

162.732

160.873

11

2.309