Die blanks for reducing diameter of nuts

Type

Dimension

Type

Dimension

d

D

Range of L

d1

d

D

Range of L

d1

BS02114-

2.1

14

15-30

2.5

20

BS08430-

8.4

30

25-54

9.3

20

BS02116-

2.1

16

15-30

2.5

20

BS10030-

10.0

30

14-20

11.4

20

BS03114-

3.1

14

15-30

3.5

20

BS10228-

10.2

28

25-54

11.4

20

BS03116-

3.1

16

15-30

3.5

20

BS10230-

10.2

30

25-54

11.4

20

BS03914-

3.9

14

15-35

4.5

20

BS11940-

11.9

40

30-40

13.2

20

BS03916-

3.9

16

15-35

4.5

20

BS12040-

12.0

40

14-20

13.4

20

BS04516-

4.5

16

10-20

5.9

20

BS14040-

14.0

40

14-40

15.4

20

BS04716-

4.7

16

15-35

5.4

20

BS17545-

17.5

45

20-54

19.3

20

BS04718-

4.7

18

20-35

5.4

20

BS19545-

19.5

45

20-30

21.25

20

BS06520-

6.5

20

20-42

7.2

20

BS21050-

21.0

50

20-30

22.75

20

BS06522-

6.5

22

10-42

7.9

20

BS24060-

24.0

60

25-30

25.75

20

BS08030-

8.0

30

10-20

9.4

20

BS26560-

26.5

60

25-30

28.63

12

BS08426-

8.4

26

25-54

9.3

20

BS32070-

32.0

70

25-30

34.13

12

 
Tolerances of the inner diameter(d) of the blanks as per table below (mm)

Nominal inner dia.

Nominal length

18

18-30

30-50

50

6

0-0.45

0-0.55

0-0.65

-

6-10

0-0.50

0-0.60

0-0.70

0-0.80

10-14

0-0.55

0-0.70

0-0.80

0-0.90

14-18

0-0.60

0-0.80

0-0.90

0-1.00

18-24

0-0.65

0-0.90

0-1.00

0-1.10

24

0-0.70

0-1.00

0-1.10

0-1.20

 
Tolerances of out diameters(D) as per the table below (mm)

Nominal out
diameters

Nominal length

18

18-30

30-50

50

14

+0.50
-0.40

+0.50
-0.40

+0.60
-0.40

+0.65
-0.40

14-18

+0.55
-0.40

+0.55
-0.40

+0.60
-0.45

+0.65
-0.45

18-24

+0.60
-0.40

+0.60
-0.40

+0.65
-0.45

+0.70
-0.45

24-30

+0.65
-0.45

+0.65
-0.45

+0.70
-0.50

+0.75
-0.50

30-45

+0.70
-0.50

+0.70
-0.50

+0.75
-0.60

+0.80
-0.60

44-55

+0.75
-0.55

+0.80
-0.60

+0.85
-0.65

+0.80
-0.65

55

-

+0.90
-0.70

+0.95
-0.75

+1.00
-0.80

 
Tolerance of blank height(H) as per the table below (mm)

Nominal out
diameters

Nominal diameters

18

18-30

30-50

50

14

+0.50
-0.40

+0.50
-0.40

+0.60
-0.40

+0.65
-0.40

14-18

+0.55
-0.40

+0.55
-0.40

+0.60
-0.45

+0.65
-0.45

18-24

+0.60
-0.40

+0.60
-0.40

+0.65
-0.45

+0.70
-0.45

24-30

+0.65
-0.45

+0.65
-0.45

+0.70
-0.50

+0.75
-0.50

30-45

+0.70
-0.50

+0.70
-0.50

+0.75
-0.60

+0.80
-0.60

44-55

+0.75
-0.55

+0.80
-0.60

+0.85
-0.65

+0.80
-0.65

55

-

+0.90
-0.70

+0.95
-0.75

+1.00
-0.80

 
The flatness as per the table below

Nominal length

18

18-30

30-50

50

Flatness

0.30

0.35

0.40

0.55