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11 .1 under cut and thr ead p a ra met ers – HEIDENHAIN CNC Pilot 4290 User Manual

Page 442

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11 Tables and overviews

430

Q=9 CylindricalWhitworth thread

Thread

diameter

Thread

designation

(in mm)

pitch

1/4“

6.35

1.27

5/16“

7.938

1.411

3/8“

9.525

1.588

7/16“

11.113

1.814

1/2“

12.7

2.117

5/8“

15.876

2.309

3/4“

19.051

2.54

7/8“

22.226

2.822

1“

25.401

3.175

1 1/8“

28.576

3.629

1 1/4“

31.751

3.629

1 3/8“

34.926

4.233

1 1/2“

38.101

4.233

1 5/8“

41.277

5.08

1 3/4“

44.452

5.08

1 7/8“

47.627

5.645

2“

50.802

5.645

2 1/4“

57.152

6.35

2 1/2“

63.502

6.35

2 3/4“

69.853

7.257

Q=11 Whitworth pipe thread

Thread

diameter

Thread

designation

(in mm)

pitch

1/8“

9.728

0.907

1/4“

13.157

1.337

3/8“

16.662

1.337

1/2“

20.995

1.814

5/8“

22.911

1.814

3/4“

26.441

1.814

7/8“

30.201

1.814

1“

33.249

2.309

1 1/8“

37.897

2.309

1 1/4“

41.91

2.309

1 3/8“

44.323

2.309

1 1/2“

47.803

2.309

1 3/4“

53.746

2.309

2“

59.614

2.309

2 1/4“

65.71

2.309

2 1/2“

75.184

2.309

2 3/4“

81.534

2.309

3“

87.884

2.309

3 1/4“

93.98

2.309

3 1/2“

100.33

2.309

3 3/4“

106.68

2.309

4“

113.03

2.309

4 1/2“

125.73

2.309

5“

138.43

2.309

5 1/2“

151.13

2.309

6“

163.83

2.309

Q=10 Tapered Whitworth thread

Thread

diameter

Thread

designation

(in mm)

pitch

1/16“

7.723

0.907

1/8“

9.728

0.907

1/4“

13.157

1.337

3/8“

16.662

1.337

1/2“

20.995

1.814

3/4“

26.441

1.814

1“

33.249

2.309

1 1/4“

41.91

2.309

1 1/2“

47.803

2.309

2“

59.614

2.309

2 1/2“

75.184

2.309

3“

87.884

2.309

4“

113.03

2.309

5“

138.43

2.309

6“

163.83

2.309

Continued

11

.1 Under

cut and

Thr

ead P

a

ra

met

ers

Q=13 UNC US coarse thread

Thread

diameter

Thread

designation

(in mm)

pitch

0.073“

1.8542

0.396875

0.086“

2.1844

0.453571428

0.099“

2.5146

0.529166666

0.112“

2.8448

0.635

0.125“

3.175

0.635

0.138“

3.5052

0.79375

0.164“

4.1656

0.79375

0.19“

4.826

1.058333333

0.216“

5.4864

1.058333333