Disegni dimensionali e diagrammi tecnici

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Dimensioni chiave e parametri tecnici

Dimensions in inches (1 inch=25.4 mm) sourceASME B18.2.1 table 6 Hex Cap Screws

Publication date: 2010
d Thread size
UNC (nr of threads x inch)

UNF (nr of threads x inch)

H basic E min
LT (l< 6")
LT (l> 6")
G min
F basic
1/4
20 28 0.156 0.245
0.75
1
0.488
0.438
5/16
18 24 0.203 0.306 0.875
1.125
0.557
0.5
3/8
16 24 0.234 0.369
1
1.25
0.628
0.562
7/16
14 20 0.281 0.430
1.125
1.375
0.698
0.625
1/2
13 20 0.313 0.493
1.25
1.5
0.840
0.75
9/16
12 18 0.359 0.554
1.375
1.625
0.910
0.812
5/8
11 18 0.391 0.617
1.5
1.75
1.051
0.937
3/4
10 16 0.469 0.741
1.75
2
1.254
1.125
7/8
9 14 0.547 0.866
2
2.25
1.465
1.313
1
8 12 0.609 0.990
2.25
2.5
1.675
1.50
1-1/8 7 12 0.688 1.114 2.5 2.75 1.859 1.625
1-1/4 7 12 0.781 1.239 2.75 3 2.066 1.875
1-3/8 6 12 0.844 1.363 3 3.25 2.273 2
1-1/2 6 12 0.938 1.488 3.25 3.5 2.480 2.25
1-5/8 1 1.613 3.5 3.75 2.686 2.438
1-3/4 5 1.094 1.738 3.75 4 2.893 2.625
1-7/8 1.156 1.863 4 4.25 3.099 2.813
2 4.5 1.219 1.988 4.25 4.5 3.306 3
2-1/4 4.5 1.375 2.238 4.75 5 3.719 3.375
2-1/2 4 1.531 2.488 5.25 5.5 4.133 3.75
2-3/4 4 1.688 2.738 5.75 6 4.546 4.125
3 4 1.875 2.988 6.25 6.5 4.959 4.5

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.1 - table 7 Heavy Hex Screws

Publication date: 2010
d Thread size
UNC (nr of threads x inch) UNF (nr of threads x inch) H basic E min
LT (l< 6")
LT (l>6")
G min
F basic
3/8 16 24 0.234 0.360 1 1.25 0.763 0.688
1/2
13 20 0.313 0.482 1.25 1.5
0.96
0.875
5/8
11 18 0.391 0.605 1.50 1.75 1.175 1.063
3/4
10 16 0.469 0.729 1.75 2 1.383
1.25
7/8
9 14 0.547 0.852 2 2.25 1.589
1.438
1
8 12 0.609 0.976 2.25 2.5 1.769
1.625
1-1/8 7 12 0.688 1.098 2.5 2.75 2.002 1.813
1-1/4 7 12 0.781 1.223 2.75 3 2.209 2
1-3/8 6 12 0.844 1.345 3 3.25 2.416 2.188
1-1/2 6 12 0.938 1.470 3.25 3.5 2.622 2.375
1-5/8 1 1.591 3.5 3.75 2.829 2.563
1-3/4 5 1.094 1.716 3.75 4 3.035 2.75
1-7/8 1.156 1.839 4 4.25 3.242 2.938
2 4.5 1.219 1.964 4.25 4.5 3.449 3.125
2-1/4 4.5 1.375 2.214 5 3.862 3.5
2-1/2 4 1.219 2.461 5.5 4.275 3.875
2-3/4 4 1.063 2.711 6 4.688 4.25
3 4 1.875 2.961 6.5 5.102 4.625
3-1/4 4 2 3.210 7 5.515 5
3-1/2 4 2.25 3.461 7.5 5.928 5.375
3-3/4 4 2.375 3.710 8 6.341 5.75
4 4 2.5 3.960 8.5 6.755 6.125
4-1/4 2.75 4.222 9 7.168 6.5
4-1/2 2.875 4.472 9.5 7.581 6.875
4-3/4 3 4.722 10 7.994 7.25
5 3.125 4.972 10.5 8.408 7.625
5-1/4 3.375 5.222 11 8.821 8
5-1/2 3.5 5.472 11.5 9.234 8.375
5-3/4 3.625 5.722 12 9.647 8.75
6 3.75 5.972 12.5 10.060 9.125