
Dimensions of Type I Cross Recessed Pan Head Screws
| Nominal Size or Basic Screw Diameter |
A | H | R | M | Driver Size | P | ||||
| Head Diameter | Head Height | Head Radius | Recess Dia, Ref |
Recess Penetration Gaging Depth | ||||||
| Max | Min | Max | Min | Min | Max | Min | ||||
| 0 | 0.0600 | 0.116 | 0.104 | 0.044 | 0.036 | 0.005 | 0.060 | 0 | 0.032 | 0.014 |
| 1 | 0.0730 | 0.142 | 0.130 | 0.053 | 0.044 | 0.005 | 0.067 | 0 | 0.040 | 0.022 |
| 2 | 0.0860 | 0.167 | 0.155 | 0.062 | 0.053 | 0.010 | 0.097 | 1 | 0.052 | 0.034 |
| 3 | 0.0990 | 0.193 | 0.180 | 0.071 | 0.062 | 0.010 | 0.105 | 1 | 0.061 | 0.043 |
| 4 | 0.1120 | 0.219 | 0.205 | 0.080 | 0.070 | 0.010 | 0.115 | 1 | 0.071 | 0.053 |
| 5 | 0.1250 | 0.245 | 0.231 | 0.089 | 0.079 | 0.015 | 0.152 | 2 | 0.072 | 0.046 |
| 6 | 0.1380 | 0.270 | 0.256 | 0.097 | 0.087 | 0.015 | 0.159 | 2 | 0.080 | 0.055 |
| 7 | 0.1510 | 0.296 | 0.281 | 0.106 | 0.096 | 0.015 | 0.170 | 2 | 0.089 | 0.064 |
| 8 | 0.1640 | 0.322 | 0.306 | 0.115 | 0.105 | 0.015 | 0.175 | 2 | 0.097 | 0.071 |
| 10 | 0.1900 | 0.373 | 0.357 | 0.133 | 0.122 | 0.020 | 0.192 | 2 | 0.113 | 0.089 |
| 12 | 0.2160 | 0.425 | 0.407 | 0.151 | 0.139 | 0.025 | 0.252 | 3 | 0.124 | 0.098 |
| 14 | 0.2420 | 0.476 | 0.457 | 0.169 | 0.156 | 0.035 | 0.274 | 3 | 0.144 | 0.118 |
| 1/4 | 0.2500 | 0.492 | 0.473 | 0.175 | 0.162 | 0.035 | 0.274 | 3 | 0.144 | 0.118 |
| 16 | 0.2680 | 0.528 | 0.508 | 0.187 | 0.173 | 0.035 | 0.286 | 3 | 0.158 | 0.132 |
| 18 | 0.2940 | 0.579 | 0.558 | 0.205 | 0.191 | 0.035 | 0.328 | 4 | 0.158 | 0.134 |
| 5/16 | 0.3125 | 0.615 | 0.594 | 0.218 | 0.203 | 0.040 | 0.343 | 4 | 0.173 | 0.149 |
| 20 | 0.3200 | 0.631 | 0.608 | 0.223 | 0.208 | 0.040 | 0.344 | 4 | 0.173 | 0.149 |
| 24 | 0.3720 | 0.734 | 0.709 | 0.259 | 0.242 | 0.040 | 0.382 | 4 | 0.213 | 0.190 |
| 3/8 | 0.3750 | 0.740 | 0.716 | 0.261 | 0.244 | 0.040 | 0.382 | 4 | 0.213 | 0.190 |
| 7/16 | 0.4375 | 0.863 | 0.837 | 0.305 | 0.284 | 0.050 | 0.406 | 4 | 0.239 | 0.214 |
| 1/2 | 0.5000 | 0.987 | 0.958 | 0.348 | 0.325 | 0.055 | 0.428 | 4 | 0.260 | 0.235 |
| 9/16 | 0.5625 | 1.041 | 1.000 | 0.391 | 0.366 | 0.065 | 0.458 | 4 | 0.292 | 0.268 |
| 5/8 | 0.6250 | 1.172 | 1.125 | 0.434 | 0.406 | 0.075 | 0.575 | 5 | 0.310 | 0.281 |
| 3/4 | 0.7500 | 1.435 | 1.375 | 0.521 | 0.488 | 0.085 | 0.621 | 5 | 0.349 | 0.322 |