MECHANICAL PROPERTIES OF NUTS

NOMINAL
DIAMETER

mm

PITCH


mm

NOMINAL
STRESS AREA
mm²

PROPERTY CLASSES OF NUTS

4

5

6

8

10

12

14

PROOF LOAD kfg

M6
M7

1
1

20.1
28.9

800
1,150

1,000
1,450

1,200
1,730

1,600
2,300

2,000
2,900

2,400
3,470

2,800
4,000

M8
M10
M12

1.25
1.5
1.75

36.6
58
84.3

1,450
2,300
3,350

1,830
2,900
4,210

2,200
3,500
5,050

2,900
4,600
6,700

3,650
5,800
8,400

4,300
6,950
10,000

5,100
8,100
11,800

M14
M16

2
2

115
157

4,600
6,300

5,750
7,850

6,900
9,400

9,200
12,600

11,500
15,700

13,800
18,800

16,100
22,000

M20
M24

2.5
3

245
353

9,800
14,100

12,200
17,600

14,700
21,200

19,600
28,200

24,500
35,300

29,400
42,300

34,300
49,400

M27
M30
M33

3
3.5
3.5

459
561
694

18,400
22,400
27,800

23,000
28,000
34,700

27,600
33,600
41,600

36,700
44,800
55,500

45,900
56,100
69,400

55,000
67,300
83,300

64,300
78,500
97,000

M36

4

817

32,700

40,800

49,000

65,300

81,700

98,000

114,400

M8

1

39.2

1,570

1,960

2,350

3,100

3,900

4,700

5,500

M10
M12
M16

1.25
1.25
1.5

61.2
92.1
167

2,400
3,700
6,700

3,060
4,600
8,350

3,700
5,500
10,000

4,900
7,400
13,400

6,100
9,200
16,700

7,350
11,000
20,000

8,550
12,900
23,400

M20
M24

1.5
2

272
384

10,900
15,400

13,600
19,200

16,300
23,000

21,800
30,700

27,200
38,400

32,600
46,000

38,000
53,800