|
HEX BOLTS (IMPERIAL) – BS1768 / ASME B18.2.1 |
|
DIA |
TPI |
A/F |
A/C |
Height |
Radius |
Thread (T) |
||
|
UNC |
UNF |
F |
C |
H |
R |
L≤6” |
L≥6” |
|
|
1/4 |
20 |
28 |
0.428 -0.438 |
0.488 -0.505 |
0.150 -0.163 |
0.015 -0.025 |
0.750 |
1.000 |
|
5/16 |
18 |
24 |
0.489 -0.500 |
0.557 -0.577 |
0.195 -0.211 |
0.015 -0.025 |
0.875 |
1.125 |
|
3/8 |
16 |
24 |
0.551 -0.562 |
0.628 -0.650 |
0.226 -0.243 |
0.015 -0.025 |
1.000 |
1.250 |
|
7/16 |
14 |
20 |
0.612 -0.625 |
0.698 -0.722 |
0.272 -0.291 |
0.015 -0.025 |
1.125 |
1.375 |
|
1/2 |
13 |
20 |
0.736 -0.750 |
0.302 -0.323 |
0.302 -0.323 |
0.015 -0.025 |
1.250 |
1.500 |
|
9/16 |
12 |
18 |
0.798 -0.812 |
0.348 -0.371 |
0.348 -0.371 |
0.020 -0.045 |
1.375 |
1.625 |
|
5/8 |
11 |
18 |
0.922 -0.938 |
0.378 -0.403 |
0.378 -0.403 |
0.020 -0.045 |
1.500 |
1.750 |
|
3/4 |
10 |
16 |
1.100 -1.125 |
0.455 -0.483 |
0.455 -0.483 |
0.020 -0.045 |
1.750 |
2.000 |
|
7/8 |
9 |
14 |
1.285 -1.312 |
0.531 -0.563 |
0.531 -0.563 |
0.040 -0.065 |
2.000 |
2.250 |
|
1 |
8 |
12 |
1.469 -1.500 |
0.591 -0.627 |
0.591 -0.627 |
0.060 -0.095 |
2.250 |
2.500 |
|
1-1/8 |
7 |
8 |
1.631 -1.688 |
0.658 -0.718 |
0.658 -0.718 |
0.060 -0.095 |
2.500 |
2.750 |
|
1/1/4 |
7 |
8 |
1.812 -1.875 |
0.749 -0.813 |
0.749 -0.813 |
0.060 -0.095 |
2.750 |
3.000 |
|
1-3/8 |
6 |
8 |
1.994 -2.062 |
0.810 -0.878 |
0.810 -0.878 |
0.060 -0.095 |
3.000 |
3.250 |
|
1-1/2 |
6 |
8 |
2.175 -2.250 |
0.902 -0.974 |
0.902 -0.974 |
0.060 -0.095 |
3.250 |
3.500 |