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JIS B1220-2015
single chamfered hexagon foundation nuts
Nom
P
k max
k min
s max
s min
e max
M16
2
13.9
12.1
24
23.2
27.7
M20
2.5
16.9
15.1
30
29.2
34.6
M22
2.5
18.9
17.1
32
31
37
M24
2|3
20
18
36
35
41.6
M27
2|3
23
21
41
40
47.3
M30
2|3.5
25
23
46
45
53.1
M33
2|3.5
27
25
50
49
57.7
M36
3|4
30
28
55
53.8
63.5
M39
3|4
32.2
29.8
60
58.8
69.3
M42
3|4.5
35.2
32.8
65
63.8
75
M45
4|4.5
37.2
34.8
70
68.8
80.8
M48
4|5
39.2
36.8
75
73.8
86.5
M52
4|5
43.2
40.8
80
78.8
92.4
M56
4|5.5
46.2
43.8
85
83.6
98.1
M60
4|5.5
49.2
46.8
90
88.6
104
M64
4|6
52.5
49.5
95
93.6
110
M68
4|6
55.5
52.5
100
98.6
115
M72
6
59.5
56.5
105
103.6
121
M76
6
62.5
59.5
110
108.6
127
M80
6
65.5
62.5
115
113.6
133
M85
6
69.5
66.5
120
118.6
139
M90
6
73.5
70.5
130
128.4
150
M95
6
77.5
74.5
135
133.4
156
M100
6
81.5
78.5
145
143.4
167
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