|
Truss Heads ANSI/ASME
B18.6.3 | ||||||||||||||
|
Nominal Size |
Head Dimensions |
Slot Dimensions |
Recess Dimensions |
Driver Size | ||||||||||
Diameter |
Height |
Width |
Depth |
Dia. |
Depth |
Width | ||||||||
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Min | ||
|
2 |
.194 |
.180 |
.053 |
.044 |
.031 |
.023 |
.031 |
.022 |
.104 |
.091 |
.059 |
.041 |
.018 |
1 |
|
3 |
.226 |
.211 |
.061 |
.051 |
.035 |
.027 |
.036 |
.026 |
.110 |
.097 |
.066 |
.049 |
.018 |
1 |
|
4 |
.257 |
.241 |
.069 |
.059 |
.039 |
.031 |
.040 |
.030 |
.112 |
.099 |
.069 |
.051 |
.018 |
1 |
|
5 |
.289 |
.272 |
.078 |
.066 |
.043 |
.035 |
.045 |
.034 |
.128 |
.115 |
.085 |
.067 |
.019 |
2 |
|
6 |
.321 |
.303 |
.086 |
.074 |
.048 |
.039 |
.050 |
.037 |
.158 |
.145 |
.084 |
.059 |
.027 |
2 |
|
8 |
.384 |
.364 |
.102 |
.088 |
.054 |
.045 |
.058 |
.045 |
.173 |
.160 |
.099 |
.074 |
.029 |
2 |
|
10 |
.448 |
.425 |
.118 |
.103 |
.060 |
.050 |
.068 |
.053 |
.188 |
.175 |
.115 |
.090 |
.030 |
2 |
|
12 |
.511 |
.487 |
.134 |
.118 |
.067 |
.056 |
.077 |
.061 |
.248 |
.235 |
.128 |
.103 |
.032 |
3 |
|
1/4 |
.573 |
.546 |
.150 |
.133 |
.075 |
.064 |
.087 |
.070 |
.263 |
.250 |
.143 |
.118 |
.033 |
3 |
|
5/16 |
.698 |
.666 |
.183 |
.162 |
.084 |
.072 |
.106 |
.085 |
.352 |
.339 |
.193 |
.168 |
.059 |
4 |
|
3/8 |
.823 |
.787 |
.215 |
.191 |
.094 |
.081 |
.124 |
.100 |
.383 |
.370 |
.226 |
.202 |
.063 |
4 |