2021 China New Design 4mm Hex Bolt - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji
2021 China New Design 4mm Hex Bolt - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji
2021 China New Design 4mm Hex Bolt - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji Detail:
Description
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|
d |
M1.4 |
M1.6 |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
(M14) |
M16 |
(M18) |
M20 |
|
|
P |
Coarse thread |
0.3 |
0.35 |
0.4 |
0.45 |
0.5 |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
2.5 |
2.5 |
|
Fine thread |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
1 |
1.25 |
1.5 |
1.5 |
1.5 |
2 |
2 |
|
|
Very Fine thread |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
1 |
1.25 |
/ |
/ |
1.5 |
1.5 |
|
|
b |
Reference value |
14 |
15 |
16 |
17 |
18 |
20 |
22 |
24 |
28 |
32 |
36 |
40 |
44 |
48 |
52 |
|
dk |
Max （Smooth） |
2.6 |
3 |
3.8 |
4.5 |
5.5 |
7 |
8.5 |
10 |
13 |
16 |
18 |
21 |
24 |
27 |
30 |
|
Max （Knurl*） |
2.74 |
3.14 |
3.98 |
4.68 |
5.68 |
7.22 |
8.72 |
10.22 |
13.27 |
16.27 |
18.27 |
21.33 |
24.33 |
27.33 |
30.33 |
|
|
Min |
2.46 |
2.86 |
3.62 |
4.32 |
5.32 |
6.78 |
8.28 |
9.78 |
12.73 |
15.73 |
17.73 |
20.67 |
23.67 |
26.67 |
29.67 |
|
|
ds |
Max |
1.4 |
1.6 |
2 |
2.5 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
16 |
18 |
20 |
|
Min |
1.26 |
1.46 |
1.86 |
2.36 |
2.86 |
3.82 |
4.82 |
5.82 |
7.78 |
9.78 |
11.73 |
13.73 |
15.73 |
17.73 |
19.67 |
|
|
k |
Max |
1.4 |
1.6 |
2 |
2.5 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
16 |
18 |
20 |
|
Min |
1.26 |
1.46 |
1.86 |
2.36 |
2.86 |
3.82 |
4.82 |
5.7 |
7.64 |
9.64 |
11.57 |
13.57 |
15.57 |
17.57 |
19.48 |
|
|
s |
Nominal |
1.3 |
1.5 |
1.5 |
2 |
2.5 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
14 |
17 |
|
Min |
1.32 |
1.52 |
1.52 |
2.02 |
2.52 |
3.02 |
4.02 |
5.02 |
6.02 |
8.025 |
10.025 |
12.032 |
14.032 |
14.032 |
17.05 |
|
|
Max |
1.36 |
1.56 |
1.56 |
2.06 |
2.58 |
3.08 |
4.095 |
5.14 |
6.14 |
8.175 |
10.175 |
12.212 |
14.212 |
14.212 |
17.23 |
|
|
t |
Min |
0.6 |
0.7 |
1 |
1.1 |
1.3 |
2 |
2.5 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
|
Thread length=b |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
|
|
d |
(M22) |
M24 |
(M27) |
M30 |
(M33) |
M36 |
M42 |
M48 |
M56 |
M64 |
M72 |
M80 |
M90 |
M100 |
|
|
P |
Coarse thread |
2.5 |
3 |
3 |
3.5 |
3.5 |
4 |
4.5 |
5 |
5.5 |
6 |
6 |
6 |
6 |
6 |
|
Fine thread |
2 |
2 |
2 |
2 |
2 |
3 |
3 |
3 |
4 |
4 |
4 |
4 |
4 |
4 |
|
|
Very Fine thread |
1.5 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
|
|
b |
Reference value |
56 |
60 |
66 |
72 |
78 |
84 |
96 |
108 |
124 |
140 |
156 |
172 |
192 |
212 |
|
dk |
Max （Smooth） |
33 |
36 |
40 |
45 |
50 |
54 |
63 |
72 |
84 |
96 |
108 |
120 |
135 |
150 |
|
Max （Knurl*） |
33.39 |
36.39 |
40.39 |
45.39 |
50.39 |
54.46 |
63.46 |
72.46 |
84.54 |
96.54 |
108.54 |
120.54 |
135.63 |
150.63 |
|
|
Min |
32.61 |
35.61 |
39.61 |
44.61 |
49.61 |
53.54 |
62.54 |
71.54 |
83.46 |
95.46 |
107.46 |
119.46 |
134.37 |
149.37 |
|
|
ds |
Max |
22 |
24 |
27 |
30 |
33 |
36 |
42 |
48 |
56 |
64 |
72 |
80 |
90 |
100 |
|
Min |
21.67 |
23.67 |
26.67 |
29.67 |
32.61 |
35.61 |
41.61 |
47.61 |
55.54 |
63.54 |
71.54 |
79.54 |
89.46 |
99.46 |
|
|
k |
Max |
22 |
24 |
27 |
30 |
33 |
36 |
42 |
48 |
56 |
64 |
72 |
80 |
90 |
100 |
|
Min |
21.48 |
23.48 |
26.48 |
29.48 |
32.38 |
35.38 |
41.38 |
47.38 |
56.26 |
63.26 |
71.26 |
79.26 |
89.13 |
99.13 |
|
|
s |
Nominal |
17 |
19 |
19 |
22 |
24 |
27 |
32 |
36 |
41 |
46 |
55 |
65 |
75 |
85 |
|
Min |
17.05 |
19.065 |
19.065 |
22.065 |
24.065 |
27.065 |
32.08 |
36.08 |
41.08 |
46.08 |
55.1 |
65.1 |
75.1 |
85.12 |
|
|
Max |
17.23 |
19.275 |
19.275 |
22.275 |
24.275 |
27.275 |
32.33 |
36.33 |
41.33 |
46.33 |
55.4 |
65.4 |
75.4 |
85.47 |
|
|
t |
Min |
11 |
12 |
13.5 |
15.5 |
18 |
19 |
24 |
28 |
34 |
38 |
43 |
48 |
54 |
60 |
|
Thread length=b |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
|
Detail drawing
The hexagon socket head bolts are classified according to the hardness, tensile strength, yield strength, etc. of the screw wire, that is, the level of the hexagon socket head bolts, and what level the hexagon socket head bolts are. Different product materials are required to have different grades of hexagon socket head cap bolts corresponding to them. All hexagon socket head cap bolts have the following grades:
Hexagon socket head bolts are divided into ordinary and high-strength according to the strength of the grade. Ordinary hexagon socket head bolts refer to grade 4.8, and high-strength socket head bolts refer to grades 8.8 and above, including grades 10.9 and 12.9. Grade 12.9 hexagon socket head cap screws generally refer to knurled, natural black hexagon socket head cap screws with oil.
The performance grades of hexagon socket head cap bolts for steel structure connection are divided into more than 10 grades, such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. After heat treatment (quenching and tempering), they are generally called high-strength bolts, and the rest are generally called ordinary bolts. The bolt performance grade label consists of two parts of numbers, which represent the nominal tensile strength value and yield ratio of the bolt material respectively.
Packing
The packaging of the socket head cap screws is the box and the outer box by default.
About us
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In order to best meet client's needs, all of our operations are strictly performed in line with our motto "High Quality, Competitive Price, Fast Service" for 2021 China New Design 4mm Hex Bolt - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji , The product will supply to all over the world, such as: Slovakia, Turkey, Gambia, We insist on the principle of "Credit being primary, Customers being the king and Quality being the best", we are looking forward to the mutual cooperation with all friends at home and abroad and we will create a bright future of business.
By Rose from British - 2017.08.28 16:02
The supplier abide the theory of "quality the basic, trust the first and management the advanced" so that they can ensure a reliable product quality and stable customers.
By Octavia from Kuwait - 2017.01.11 17:15
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