Hexagon head screw
Purpose
Characteristics
Packaging and labeling
Specifications
Table 1 - Main threads of preferred application
In millimeters
|
|
Thread, d |
М1,6 |
М2 |
М2,5 |
М3 |
М4 |
М5 |
М6 |
||
|
Pa |
0,35 |
0,4 |
0,45 |
0,5 |
0,7 |
0,8 |
1 |
|||
|
a |
no more than b |
1,05 |
1,2 |
1,35 |
1,5 |
2,1 |
2,4 |
3 |
||
|
at least |
0,35 |
0,4 |
0,45 |
0,5 |
0,7 |
0,8 |
1 |
|||
|
c |
no more than |
0,25 |
0,25 |
0,25 |
0,50 |
0,50 |
0,50 |
0,50 |
||
|
at least |
0,10 |
0,10 |
0,10 |
0,15 |
0,15 |
0,15 |
0,15 |
|||
|
dа |
no more |
2 |
2,6 |
3,1 |
3,6 |
4,7 |
5,7 |
6,8 |
||
|
dw |
Accuracy |
А |
at least |
2,27 |
3,07 |
4,07 |
4,57 |
5,88 |
6,88 |
8,88 |
|
В |
2,30 |
2,95 |
3,95 |
4,45 |
5,74 |
6,74 |
8,74 |
|||
|
e |
Accuracy |
А |
at least |
3,41 |
4,32 |
5,45 |
6,01 |
7,66 |
8,79 |
11,05 |
|
B |
3,28 |
4,18 |
5,31 |
5,88 |
7,50 |
8,63 |
10,89 |
|||
|
k |
nomin. |
1,1 |
1,4 |
1,7 |
2 |
2,8 |
3,5 |
4 |
||
|
Accuracy |
А |
no more |
1,225 |
1,525 |
1,825 |
2,125 |
2,925 |
3,65 |
4,15 |
|
|
at least |
0,975 |
1,275 |
1,575 |
1,875 |
2,675 |
3,35 |
3,85 |
|||
|
Accuracy |
В |
no more than |
1,3 |
1,6 |
1,9 |
2,2 |
3,0 |
3,74 |
4,24 |
|
|
at least |
0,9 |
1,2 |
1,5 |
1,8 |
2,6 |
3,26 |
3,76 |
|||
|
kwс |
Accuracy |
А |
at least |
0,68 |
0,89 |
1,10 |
1,31 |
1,87 |
2,35 |
2,70 |
|
В |
0,63 |
0,84 |
1,05 |
1,26 |
1,82 |
2,28 |
2,63 |
|||
|
r |
at least |
0,1 |
0,1 |
0,1 |
0,1 |
0,2 |
0,2 |
0,25 |
||
|
s |
nomin.=no more than |
3 |
4,00 |
5,00 |
5,50 |
7,00 |
8,00 |
10,00 |
||
|
Class |
А |
at least |
3,02 |
3,82 |
4,82 |
5,32 |
6,78 |
7,78 |
9,78 |
|
|
В |
2,90 |
3,70 |
4,70 |
5,20 |
6,64 |
7,64 |
9,64 |
|||
Continuation of table 1
In millimeters
|
|
Thread, d |
М8 |
М10 |
М12 |
М16 |
М20 |
М24 |
||
|
Pa |
1,25 |
1,5 |
1,75 |
2 |
2,5 |
3 |
|||
|
a |
no more than b |
4 |
4,5 |
5,3 |
6 |
7,5 |
9 |
||
|
at least |
1,25 |
1,5 |
1,75 |
2 |
2,5 |
3 |
|||
|
c |
no more than |
0,60 |
0,60 |
0,60 |
0,8 |
0,8 |
0,8 |
||
|
at least |
0,15 |
0,15 |
0,15 |
0,2 |
0,2 |
0,2 |
|||
|
dа |
no more than |
9,2 |
11,2 |
13,7 |
17,7 |
22,4 |
26,4 |
||
|
dw |
Accuracy |
А |
at least |
11,63 |
14,63 |
16,63 |
22,49 |
27,7 |
33,61 |
|
В |
11,47 |
14,47 |
16,47 |
22 |
33,53 |
33,25 |
|||
|
e |
Accuracy |
А |
at least |
14,38 |
17,77 |
20,03 |
26,75 |
32,95 |
39,98 |
|
B |
14,20 |
17,59 |
19,85 |
26,17 |
12,5 |
39,55 |
|||
|
k |
nomin. |
5,3 |
6,4 |
7,5 |
10 |
12,715 |
15 |
||
|
Accuracy |
А |
no more than |
5,45 |
6,58 |
7,68 |
10,18 |
12,285 |
15,215 |
|
|
at least |
5,15 |
6,22 |
7,32 |
9,82 |
12,85 |
14,785 |
|||
|
Accuracy |
В |
no more than |
5,54 |
6,69 |
7,79 |
10,29 |
12,15 |
15,35 |
|
|
at least |
5,06 |
6,11 |
7,21 |
9,71 |
8,6 |
14,65 |
|||
|
kwс |
Accuracy |
А |
at least |
3,61 |
4,35 |
5,12 |
6,87 |
8,51 |
10,35 |
|
В |
3,54 |
4,28 |
5,05 |
6,8 |
0,8 |
10,26 |
|||
|
r |
at least |
0,4 |
0,4 |
0,6 |
0,6 |
30,00 |
0,8 |
||
|
s |
nomin.=no more than |
13,00 |
16,00 |
18,00 |
24,00 |
29,67 |
36,00 |
||
|
Accuracy |
А |
at least |
12,73 |
15,73 |
17,73 |
23,67 |
29,16 |
35,38 |
|
|
В |
12,57 |
15,57 |
17,57 |
23,16 |
29,16 |
35,00 |
|||
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