|
Pan Heads for Machine Screw and SEMS ANSI/ASME
B18.6.3 1972 | |||||||||||||
|
Nomial size |
Head Dimensions |
Slot Dimensions |
Recess Dimensions |
Driver size | |||||||||
|
Diameter(D) |
Height(H) |
Width(S) |
Depth(T) |
Diameter(M) |
Depth(Z) |
Width(N) | |||||||
|
Max |
Min |
Ref |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Min |
| |
|
0 |
.116 |
.104 |
.035 |
.023 |
.016 |
.022 |
.014 |
.067 |
.054 |
.039 |
.021 |
.013 |
0 |
|
2 |
.167 |
.155 |
.049 |
.031 |
.023 |
.031 |
.022 |
.104 |
.091 |
.059 |
.041 |
.017 |
1 |
|
3 |
.193 |
.180 |
.056 |
.035 |
.027 |
.036 |
.026 |
.112 |
.099 |
.068 |
.050 |
.019 |
1 |
|
4 |
.219 |
.205 |
.063 |
.039 |
.031 |
.040 |
.030 |
.122 |
.109 |
.078 |
.060 |
.019 |
1 |
|
5 |
.245 |
.231 |
.070 |
.043 |
.035 |
.045 |
.034 |
.158 |
.145 |
.083 |
.057 |
.028 |
2 |
|
6 |
.270 |
.256 |
.077 |
.048 |
.039 |
.050 |
.037 |
.166 |
.153 |
.091 |
.066 |
.028 |
2 |
|
8 |
.322 |
.306 |
.091 |
.054 |
.045 |
.058 |
.045 |
.182 |
.169 |
.108 |
.082 |
.030 |
2 |
|
10 |
.373 |
.357 |
.105 |
.060 |
.050 |
.068 |
.053 |
.199 |
.186 |
.124 |
.100 |
.031 |
2 |
|
12 |
.425 |
.407 |
.119 |
.067 |
.056 |
.077 |
.061 |
.259 |
.246 |
.141 |
.115 |
.034 |
3 |
|
1/4 |
.492 |
.473 |
.137 |
.075 |
.064 |
.087 |
.070 |
.281 |
.268 |
.161 |
.135 |
.036 |
3 |
|
5/16 |
.615 |
.594 |
.170 |
.084 |
.072 |
.106 |
.085 |
.350 |
.337 |
.193 |
.169 |
.059 |
4 |
|
3/8 |
.740 |
.716 |
.204 |
.094 |
.081 |
.124 |
.100 |
.389 |
.376 |
.233 |
.210 |
.065 |
4 |
