SAE J429
Metric Hex Bolts-NINGBO BOLT
ASME
B18.2.3.5M Metric Hex Bolts
Dimensions of Metric
Hex Bolts
Nominal
Bolt Diameter, D, and Thread Pitch
Body
Diameter Ds
Width
Across Flats, S
Width
Across Corners, E
Head
Height, K
Wrenching
Height, K1, Min
For Bolt
Lengths
Basic Thread Length, a B
Max
Min
Max
Min
Max
Min
Max
Min
< 125mm
> 125 and
< 200mm
> 200mm
M5 x 0.8
5.48
4.52
8.00
7.64
9.24
8.63
3.58
3.35
2.4
16
22
35
M6 x 1.0
6.19
5.52
10.00
9.64
11.55
10.89
4.38
3.55
2.8
18
24
37
M8 x 1.25
8.58
7.42
13.00
12.57
15.01
14.20
5.68
5.10
3.7
22
28
41
a M10
x 1.5
10.58
9.42
15.00
14.57
17.32
16.46
6.85
6.17
4.5
26
32
45
M10 x 1.5
10.58
9.42
16.00
15.57
18.48
17.59
6.85
6.17
4.5
26
32
45
M12 x 1.75
12.70
11.30
18.00
17.57
20.78
19.85
7.95
7.24
5.2
30
36
49
M14 x 2.0
14.70
13.30
21.00
20.16
24.25
22.78
9.25
8.51
6.2
34
40
53
M16 x 2.0
16.70
15.30
24.00
23.16
27.71
26.17
10.75
9.68
7.0
38
44
57
M20 x 2.5
20.84
19.16
30.00
29.16
34.64
32.95
13.40
12.12
8.8
46
52
65
M24 x 3.0
24.84
23.16
36.00
35.00
41.57
39.55
15.90
14.56
10.5
54
60
73
M30 x 3.5
30.84
29.16
46.00
45.00
5312
50.55
19.78
17.92
13.1
66
72
85
M36 x 4.0
37.00
35.00
55.00
53.80
63.51
60.79
23.55
21.72
15.8
78
84
97
M42 x 4.5
43.00
41.00
65.00
62.90
75.06
71.71
27.05
25.03
18.2
90
96
109
M48 x 5.0
49.00
47.00
75.00
72.60
86.60
82.76
31.07
28.93
21.0
102
108
121
M56 x 5.5
57.20
54.80
85.00
82.20
98.15
93.71
36.20
33.80
24.5
--
124
137
M64 x 6.0
65.52
62.80
95.00
91.80
109.70
104.65
41.32
38.68
28.0
--
140
153
M72 x 6.0
73.84
70.80
105.00
101.40
121.24
115.60
46.45
43.55
31.5
--
156
169
M80 x 6.0
82.16
78.80
115.00
111.00
132.79
126.54
51.58
48.42
35.0
--
172
185
M90 x 6.0
92.48
88.60
130.00
125.50
150.11
143.07
57.74
54.26
39.2
--
192
205
M100 x 6.0
102.80
98.60
145.00
140.00
167.43
159.60
63.90
60.10
43.4
--
212
225
1.
a Basic
thread length, B, is a reference dimension.
2.
b This
size with width across flats of 15 mm is not standard. Unless specifically
ordered, M10 hex bolts with 16mm width across flats will be furnished.
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Ningbo, China
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