轉造素材徑一覽表

公制粗牙螺紋(H/6)  Metric Coarse screw threads(H/6)              (單位:mm)(unit:mm)

螺紋尺寸

Threads Size

等級tolerance class

1 class 1

2 class 2

3 class 3

M

2

×

0.4

1.73

1.71

1.70

1.67

1.68

1.64

 

2.3

×

0.4

2.03

2.01

2.00

1.97

1.98

1.94

 

2.6

×

0.45

2.29

2.27

2.26

2.23

2.25

2.21

 

3

×

0.5

2.66

2.64

2.63

2.60

 

 

 

3.5

×

0.6

3.10

3.08

3.06

3.03

3.05

3.00

 

4

×

0.7

3.54

3.51

3.49

3.45

 

 

 

4.5

×

0.75

4.01

3.98

3.96

3.92

3.94

3.88

 

5

×

0.8

4.47

4.44

4.43

4.38

4.40

4.33

 

6

×

1

5.34

5.31

5.30

5.25

5.28

5.21

 

7

×

1

6.34

6.31

6.30

6.25

6.28

6.21

 

8

×

1.25

7.18

7.14

7.12

7.07

7.10

7.03

 

9

×

1.25

8.18

8.14

8.12

8.07

8.10

8.03

 

10

×

1.5

9.03

8.99

8.97

8.91

8.94

8.86

 

11

×

1.5

10.02

9.98

9.97

9.91

9.94

9.86

 

12

×

1.75

10.86

10.82

10.79

10.73

10.77

10.69

 

14

×

2

12.70

12.65

12.63

12.56

12.61

12.52

 

16

×

2

14.70

14.65

14.63

14.56

14.61

14.52

 

18

×

2.5

16.38

16.33

16.31

18.23

16.28

16.17

 

20

×

2.5

18.38

18.33

18.31

18.23

18.28

18.17

 

22

×

2.5

20.38

20.33

20.31

20.23

20.28

20.17

 

24

×

3

22.07

22.01

21.98

21.09

21.96

21.85

 

27

×

3

25.06

25.00

24.98

24.89

24.95

24.84

 

30

×

3.5

27.75

27.68

27.66

27.56

27.63

27.50

 

33

×

3.5

30.74

30.38

30.65

30.56

30.62

30.50

 

36

×

4

33.43

33.37

33.33

33.23

33.29

33.16

 

39

×

4

36.43

36.36

36.32

36.22

36.27

36.11

 

42

×

4.5

39.11

39.04

39.01

38.90

38.97

38.82

 

45

×

4.5

42.11

42.04

42.00

41.90

41.96

41.82

公制細牙螺紋(H/6)  Metric Fine screw threads(H/6)                (單位:mm)(unit:mm)

螺紋尺寸

Threads Size

等級tolerance class

1 class 1

2 class 2

3 class 3

M

4

×

0.5

3.66

3.63

3.61

3.57

3.60

3.55

 

4.5

×

0.5

4.16

4.13

4.11

4.07

4.10

4.05

 

5

×

0.5

4.66

4.63

4.61

4.57

4.60

4.55

 

6

×

0.75

5.50

5.47

5.45

5.41

5.44

5.38

 

7

×

0.75

6.50

6.47

6.45

6.41

6.44

6.38

 

8

×

1.0

7.33

7.30

7.29

7.24

7.27

7.20

 

9

×

1.0

8.33

8.30

8.29

8.24

8.27

8.20

 

10

×

1.25

9.18

9.14

9.12

9.07

9.10

9.03

 

10

×

1.0

9.33

9.30

9.28

9.23

9.26

9.19

 

12

×

1.5

11.01

10.97

10.95

10.89

10.93

10.85

 

12

 

1.25

11.17

11.13

11.12

11.06

11.08

10.98

 

14

 

1.5

13.01

12.97

12.95

12.89

12.93

12.85

 

16

 

1.5

15.01

14.97

14.95

14.89

14.93

14.85

 

18

×

2.0

16.70

16.65

16.62

16.54

16.59

16.48

 

18

×

1.5

17.01

16.96

16.93

16.86

16.91

16.81

 

20

×

2.0

18.70

18.65

18.62

18.54

18.59

18.48

 

公制細牙螺紋(H/6)  Metric Fine screw threads(H/6)                (單位:mm)(unit:mm)

螺紋尺寸

Threads Size

等級tolerance class

1 class 1

2 class 2

3 class 3

M

20

×

1.5

19.00

18.95

18.92

18.85

18.90

18.80

 

22

×

1.5

21.00

20.95

20.92

20.85

20.90

20.80

 

24

×

1.5

23.00

22.95

22.92

22.85

22.90

22.80

 

26

×

1.5

25.00

24.95

24.93

24.85

24.90

24.80

 

27

×

1.5

26.00

25.95

25.93

25.85

25.90

25.80

 

28

×

1.5

27.00

26.95

26.93

26.85

26.90

26.80

 

30

×

1.5

29.00

28.95

28.93

28.85

28.90

28.80

 

32

×

1.5

31.00

30.95

30.93

30.85

30.90

30.80

 

33

×

1.5

32.00

31.95

31.93

31.85

31.90

31.79

 

35

×

1.5

34.00

33.95

33.93

33.85

33.90

33.79

 

36

×

1.5

35.00

34.95

34.93

34.85

34.90

34.79

美制細牙螺紋  Unified Fine screw threads                        (單位:mm)(unit:mm)

螺紋尺寸

Threads Size

等級tolerance class

3A

2A

1A

No.

2

64UNF

1.92

1.90

1.90

1.87

 

 

No.

3

56

2.21

2.19

2.19

2.16

 

 

No.

4

48

2.49

2.47

2.46

2.43

 

 

No.

5

44

2.79

2.76

2.76

2.73

 

 

No.

6

40

3.08

3.06

3.05

3.02

 

 

No.

8

36

3.69

3.67

3.66

3.63

 

 

No.

10

32

4.29

4.26

4.26

4.22

 

 

No.

12

28

4.88

4.85

4.84

4.80

 

 

 

1/4

28

5.75

5.72

5.72

5.68

5.70

5.63

 

5/16

24

7.24

7.21

7.20

7.16

7.18

7.11

 

3/8

24

8.83

8.79

8.79

8.74

8.76

8.69

 

7/16

20

10.28

10.24

10.23

10.18

10.21

10.13

 

1/2

20

11.86

11.82

11.82

11.76

11.79

11.71

 

9/16

18

13.36

13.32

13.31

13.25

13.28

13.19

 

5/8

18

14.94

14.90

14.89

14.83

14.86

14.77

 

3/4

16

18.00

17.96

17.95

17.89

17.92

17.82

 

7/8

14

21.03

20.98

20.98

20.91

20.94

20.84

1

 

12

24.01

23.96

23.95

23.87

23.91

23.80

1

1/8

12

27.19

27.13

27.12

27.05

27.08

26.97

1

1/4

 

12

30.36

 

30.30

30.29

 

30.21

30.25

 

30.14

1

3/8

12

33.53

33.47

33.53

33.47

33.42

33.30

1

1/2

12

36.70

36.64

36.70

36.64

36.59

36.47

管用螺紋  Whitworth screw threads(acc. To old Jis)                (單位:mm)(unit:mm)

 

螺紋尺寸

Threads Size

等級PF

PS

PT

A class A

B class B

基準徑位置

Position of

Gauge plane

毛還直徑

blank dia.

1/8

28

9.10

9.05

9.05

8.94

9.00

8.92

3.97

9.16

9.10

1/4

19

12.25

12.19

12.19

12.07

12.11

12.01

6.01

12.32

12.23

3/8

19

15.76

15.69

15.69

15.57

15.61

15.51

6.35

15.82

15.73

1/2

14

19.74

19.67

19.67

19.53

19.55

19.43

8.16

19.81

19.70

3/4

14

25.22

25.15

25.15

25.01

25.03

24.90

9.53

25.29

25.18

1

11

31.70

31.61

31.61

31.43

31.47

31.34

10.39

31.79

31.64

 


美制細牙螺紋  Unified Fine screw threads                        (單位:mm)(unit:mm)

螺紋尺寸

Threads Size

等級tolerance class

3A

2A

1A

No.

1

64UNF

1.59

1.57

1.57

1.54

 

 

No.

2

56

1.89

1.87

1.86

1.84

 

 

No.

3

48

2.17

2.15

2.14

2.11

 

 

No.

4

40

2.42

2.40

2.40

2.36

 

 

No.

5

40

2.75

2.73

2.72

2.69

 

 

No.

6

32

2.98

2.95

2.95

2.91

 

 

No.

8

32

3.64

3.61

3.60

3.57

 

 

No.

10

24

4.12

4.09

4.09

4.05

 

 

No.

12

40

4.78

4.75

4.75

4.70

 

 

 

1/4

20

5.53

5.50

5.50

5.45

5.47

5.40

 

5/16

18

7.03

6.99

6.98

6.93

6.96

6.88

 

3/8

16

8.50

8.46

8.45

8.40

8.43

8.34

 

7/16

14

9.94

9.90

9.89

9.83

9.86

9.77

 

1/2

13

11.44

11.39

11.39

11.32

11.35

11.26

 

9/16

12

12.92

12.87

12.87

12.80

12.83

12.73

 

5/8

11

14.39

14.34

14.33

14.26

14.30

14.19

 

3/8

10

17.41

17.35

17.34

17.27

17.31

17.20

 

7/16

9

20.40

20.34

20.34

20.26

20.30

20.17

 

1/2

8

23.35

23.29

23.28

23.20

23.24

23.11

 

9/16

7

26.24

26.17

26.16

26.07

26.12

25.98

1

1/4

7

29.41

29.34

29.33

29.24

29.28

29.14

1

3/8

6

32.20

32.13

32.12

32.02

32.07

31.91

英制螺紋  Whitworth screw threads(Acc to oid JIs)                (單位:mm)(unit:mm)

螺紋尺寸

Threads Size

等級tolerance class

2 class 2

3 class 3

4 class 4

W

3/16

24

4.08

4.05

4.06

4.02

4.04

3.97

 

1/4

20

5.51

5.46

5.49

5.42

5.47

5.38

 

5/16

18

7.01

6.95

6.99

6.91

6.97

6.87

 

3/16

16

8.48

8.41

8.46

8.37

8.44

8.33

 

7/16

14

9.92

9.85

9.90

9.81

9.87

9.76

 

1/2

12

11.31

11.24

11.29

11.19

11.27

11.15

 

9/16

12

12.89

12.82

12.87

12.77

12.85

12.73

 

5/8

11

14.36

14.29

14.34

14.24

14.31

14.18

 

3/4

10

17.38

17.30

17.36

17.25

17.33

17.19

 

7/8

9

20.38

20.29

20.34

20.23

20.32

20.18

1

 

8

23.32

23.23

23.29

23.17

23.26

23.11