Este produto é regulamentado pelas seguintes normas:
UNI 8114
Parafusos formadores de rosca, cabeça escareada elevada, rebaixamento cruzado
Este produto é regulamentado pelas seguintes normas:
Standard UNI 8114
Parafusos roscados, cabeça escareada, cabeça eleva...
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| Dimensions in mm - source UNI 8114 Publication date: 1993 |
| d thread size | M 2 | M 2.2 | M 2.5 | M 3 | M 3.5 | M 4 | M 5 | M 6 | M 8 |
| P | 0.4 | 0.45 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.25 |
| D max | 3.8 | 4.3 | 4.7 | 5.6 | 6.5 | 7.5 | 9.2 | 11 | 14.5 |
| D min | | | | | | | | | |
| f ≈ | | | | | | | | | |
| k max | | | | | | | | | |
| r1 ≈ | | | | | | | | | |
| r2 ≈ | | | | | | | | | |
| Z | | | | | | | | | | |
| m ≈ | | | | | | | | | |
| max depth | | | | | | | | | |
| min depth | | | | | | | | | |
| H | | | | | | | | | | |
| m ≈ | | | | | | | | | |
| max depth | | | | | | | | | |
| min depth | | | | | | | | | |
| UNI 8114 ≈ commercial items |
| d thread size | M 2 | M 2.2 | M 2.5 | M 3 | M 3.5 | M 4 | M 5 | M 6 | M 8 |
| nominal length l | | | | | | | | | |
| 6 | X | X | X | | | | | | |
| 8 | | | | | | | | | |
| 10 | | | | | | | | | |
| 12 | | | | | | | | | |
| 14 | | | | | | | | | |
| 16 | | | | | | | | | |
| 20 | | | | | | | | | |
| 25 | | | | | | | | | |
| 30 | | | | | | | | | |
| 35 | | | | | | | | | |
| 40 | | | | | | | | | |
| 45 | | | | | | | | | |
| 50 | | | | | | | | | |
Parafusos formadores de rosca, cabeça escareada elevada, rebaixamento cruzado
|
Dimensions in mm - source UNI 8114
Publication date: 1993
|
| d thread size |
M 2 |
M 2.2 |
M 2.5 |
M 3 |
M 3.5 |
M 4 |
M 5 |
M 6 |
M 8 |
| P |
0.4 |
0.45 |
0.45 |
0.5 |
0.6 |
0.7 |
0.8 |
1 |
1.25 |
| D max |
3.8 |
4.3 |
4.7 |
5.6 |
6.5 |
7.5 |
9.2 |
11 |
14.5 |
| D min |
3.5 |
4 |
4.4 |
5.3 |
6.14 |
7.14 |
8.84 |
10.57 |
14.07 |
| f ≈ |
0.4 |
0.5 |
0.6 |
0.75 |
0.85 |
1 |
1.25 |
1.5 |
2 |
| k max |
1.2 |
1.3 |
1.5 |
1.65 |
1.93 |
2.2 |
2.5 |
3 |
4 |
| r1 ≈ |
0.2 |
0.25 |
0.25 |
0.3 |
0.35 |
0.4 |
0.5 |
0.6 |
0.8 |
| r2 ≈ |
4 |
3.8 |
5.4 |
6 |
7 |
8 |
9.4 |
12 |
15 |
| Z |
recess nr |
1 |
1 |
1 |
1 |
2 |
2 |
2 |
3 |
4 |
| m ≈ |
2.4 |
2.4 |
2.8 |
3 |
4 |
4.2 |
4.4 |
6.1 |
8.5 |
| max depth |
1.35 |
1.35 |
1.73 |
2.01 |
2.06 |
2.31 |
2.51 |
2.92 |
4.38 |
| min depth |
1.1 |
1.1 |
1.48 |
1.76 |
1.6 |
1.85 |
2.05 |
2.46 |
3.86 |
| H |
recess nr |
1 |
1 |
1 |
1 |
2 |
2 |
2 |
3 |
4 |
| m ≈ |
2.8 |
2.8 |
2.7 |
3.1 |
4.2 |
4.5 |
5.3 |
6.8 |
9 |
| max depth |
1.57 |
1.57 |
1.6 |
2 |
2.24 |
2.54 |
3.27 |
3.53 |
4.68 |
| min depth |
1.17 |
1.17 |
1.3 |
1.7 |
1.74 |
2.04 |
2.77 |
3.03 |
4.18 |
|
UNI 8114 ≈ commercial items
|
| d thread size |
M 2 |
M 2.2 |
M 2.5 |
M 3 |
M 3.5 |
M 4 |
M 5 |
M 6 |
M 8 |
| nominal length l |
|
|
|
|
|
|
|
|
|
| 6 |
X |
X |
X |
|
|
|
|
|
|
| 8 |
X |
X |
X |
X |
X |
|
|
|
|
| 10 |
X |
X |
X |
X |
X |
X |
X |
|
|
| 12 |
X |
X |
X |
X |
X |
X |
X |
|
|
| 14 |
X |
X |
X |
X |
X |
X |
X |
X |
|
| 16 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
| 20 |
|
|
X |
X |
X |
X |
X |
X |
X |
| 25 |
|
|
X |
X |
X |
X |
X |
X |
X |
| 30 |
|
|
|
X |
X |
X |
X |
X |
X |
| 35 |
|
|
|
|
|
X |
X |
X |
X |
| 40 |
|
|
|
|
|
X |
X |
X |
X |
| 45 |
|
|
|
|
|
|
X |
X |
X |
| 50 |
|
|
|
|
|
|
X |
X |
X |
Lista completa de fornecedores de Parafusos formadores de rosca, cabeça escareada elevada, rebaixamento cruzado
A norma especifica as características dos parafusos com cabeça sextavada para ligações. Este tipo de ligação roscada, mesmo sem a substituição do parafuso, oferece uma boa resistência ao rasgamento, uma vez que a folga entre o parafuso e a porca é nula. Além disso, o atrito entre as peças acopladas aumenta ainda mais o binário de desenroscamento. Para a preparação dos diâmetros dos furos, consultar a norma UNI 8108.
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