BS 3692 - Nut Dimension

Dimensional Standard of Nut As Per BS 3692

β = 15° to 30°
θ = 90° to 120°

S. No.

Size

Pitch (p)

Width across corner (e)

Width across Flat (s)

Thickness (m)

Major Diameter D

Pitch Diameter D1

Minor Diameter D2

mm

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Min.

Max.

Min.

Max.

1

M-16

2.00

26.75

27.70

23.67

24.00

12.57

13.00

16.00

14.70

14.93

13.84

14.21

2

M-18

2.50

30.14

31.20

26.67

27.00

14.57

15.00

18.00

16.38

16.60

15.60

15.70

3

M-20

2.50

33.53

34.60

29.67

30.00

15.57

16.00

20.00

18.38

18.60

17.60

17.70

4

M-22

2.50

35.72

36.90

31.61

32.00

17.57

18.00

22.00

20.38

20.60

19.60

19.70

5

M-24

3.00

39.98

41.60

35.38

36.00

18.48

19.00

24.00

22.05

22.32

20.70

20.80

6

M-27

3.00

45.63

47.30

40.38

41.00

21.48

22.00

27.00

25.05

25.32

23.80

23.90

7

M30

3.50

51.28

53.10

45.38

46.00

23.48

24.00

30.00

27.73

28.01

26.50

26.60

8

M-33

3.50

55.80

57.70

49.38

50.00

25.48

26.00

33.00

30.73

31.01

29.20

29.30

9

M-36

4.00

61.31

63.50

54.26

55.00

28.48

29.00

36.00

33.40

33.70

32.10

32.20

10

M-39

4.00

66.96

69.30

59.26

60.00

30.38

31.00

39.00

36.40

36.70

35.10

35.20

11

M-42

4.50

72.61

75.10

64.26

65.00

33.38

34.00

42.00

39.08

39.39

37.60

37.70

12

M-45

4.50

78.26

80.80

69.26

70.00

35.38

36.00

45.00

42.08

42.39

40.90

41.00

13

M-48

5.00

83.91

86.60

74.26

75.00

37.38

38.00

48.00

44.75

45.09

43.10

43.20

14

M-52

5.00

89.56

92.40

79.26

80.00

41.38

42.00

52.00

48.75

49.09

47.50

47.60

15

M-56

5.50

95.07

98.10

84.13

85.00

44.38

45.00

56.00

52.43

52.78

50.80

50.90

16

M-60

5.50

100.72

103.90

89.13

90.00

47.38

48.00

60.00

56.43

56.78

54.90

55.00

17

M-64

6.00

106.37

109.70

94.13

95.00

50.26

51.00

64.00

60.10

60.48

57.80

57.90