Suggested Hole Sizes for Die Casting
 The minimum length of thread engagement should be equal to twice the diameter of the screw. The hole diameter, to ensure optimum performance, should provide for 65% to 75% thread engagement. |
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|
Screw
Size |
Hole
Diameter as Cast Std. Taper |
F Hole Dia. as Drilled |
L Length of Thread Engage- ment |
H
Boss Dia. Max. |
J Distance to Edge for no Measureable Distortion - Min. |
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|
A
- Top |
B
- Bottom |
|||||||
|
Max. |
Min. |
Max. |
Min. |
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|
M2
x 0.40 |
1.91 |
1.83 |
1.81 |
1.73 |
1.81 |
4.00 |
3.32 |
1.04 |
|
2-56 |
.081 |
.078 |
.077 |
.074 |
.077 |
.172 |
.197 |
.046 |
|
M2.5x0.45 |
2.39 |
2.31 |
2.28 |
2.20 |
2.28 |
5.00 |
4.15 |
0.55 |
|
3-48 |
.093 |
.090 |
.088 |
.085 |
.088 |
.198 |
.208 |
.054 |
|
M3x0.5 |
2.90 |
2.82 |
2.76 |
2.68 |
2.76 |
6.00 |
4.98 |
0.61 |
|
5-40 |
.118 |
.115 |
.112 |
.109 |
.112 |
.250 |
.232 |
.065 |
|
M3.5x0.6 |
3.31 |
3.23 |
3.21 |
3.13 |
3.21 |
7.00 |
5.81 |
0.74 |
|
6-32 |
.128 |
.125 |
.122 |
.119 |
.122 |
.276 |
.242 |
.081 |
|
M4x0.7 |
3.82 |
3.74 |
3.64 |
3.56 |
3.64 |
8.0 |
6.64 |
0.86 |
|
8-32 |
.155 |
.152 |
.148 |
.145 |
.148 |
.328 |
.272 |
.081 |
|
M4.5x0.75 |
4.31 |
4.23 |
4.11 |
4.03 |
4.11 |
9.00 |
7.47 |
0.92 |
|
10-24 |
.177 |
.174 |
.168 |
.165 |
.168 |
.380 |
.315 |
.108 |
|
10-32 |
.182 |
.179 |
.174 |
.171 |
.174 |
.380 |
.315 |
.081 |
|
M5x0.8 |
4.8 |
4.72 |
4.58 |
4.50 |
4.58 |
10.00 |
8.30 |
.098 |
|
12-24 |
.203 |
.200 |
.194 |
.191 |
.194 |
.432 |
.359 |
.108 |
|
M6x1.0 |
5.75 |
5.66 |
5.48 |
5.40 |
5.48 |
12.00 |
9.96 |
1.23 |
|
M6.3x1.0 |
6.05 |
5.97 |
5.78 |
5.70 |
5.78 |
13.00 |
10.46 |
1.23 |
|
1/4-20 |
.235 |
.232 |
.224 |
.221 |
.224 |
.500 |
.415 |
.130 |
|
M7x1.0 |
6.78 |
6.70 |
6.48 |
6.40 |
6.48 |
14.00 |
11.62 |
1.23 |
|
5/16-18 |
.267 |
.294 |
.284 |
.281 |
.284 |
.625 |
.519 |
.144 |
|
M8x1.25 |
7.69 |
7.61 |
7.32 |
7.27 |
7.35 |
16.00 |
13.28 |
1.53 |
|
3/8-16 |
.359 |
.356 |
.343 |
.340 |
.343 |
.750 |
.623 |
.162 |
|
M10x1.5 |
9.64 |
9.56 |
9.22 |
9.14 |
9.22 |
20.00 |
16.60 |
1.84 |
|
7/16-14 |
.419 |
.416 |
.400 |
.397 |
.400 |
.875 |
.726 |
.186 |
|
M12x1.75 |
11.59 |
11.51 |
11.09 |
11.01 |
11.09 |
24.00 |
19.92 |
2.15 |
|
1/2-13 |
.481 |
.478 |
.460 |
.457 |
.460 |
1.00 |
.830 |
.200 |
Torque Tensioning
Screw Point Types
Pilot Hole Sizes
Bolt & Screw Head Types
Weights per Thousand
Unified External Screw Threads
Rod & Bolt Diameters
Metric Conversions
Hole Sizes for Die Casting
Material Strength
Drive Tool Sizes
Hardness Conversions
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Telephone: 216-383-0225 • Fax: 216-481-4427
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