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ASME/ANSI B18.6.3:2010 Pan Head Phillips Tapping Screw
ASME/ANSI B18.6.3:2010 Pan Head Phillips Tapping Screw is used for light-duty fastening under the U.S. standard system. The pan head provides good coverage and bearing contact, while the Phillips drive supports quick installation with manual or powered tools.
The tapping thread forms its mating thread in prepared holes in sheet metal, plastic, and light alloys, reducing the need for nuts or separate tapping operations. This design is suitable for production assemblies requiring cycle efficiency, tool compatibility, and a clean appearance.
It can be used in appliances, electronics, enclosures, vehicle interior parts, plastic housings, and general industrial panels. Different point forms, coatings, and material options can be supplied for indoor, mildly corrosive, or visible applications.
Unit: inch
| Thread diameter |
dk |
k |
H type cross recess | Z type cross recess | |||||||||||||||
|
M |
T |
N |
Slot number |
Cross recess insertion depth |
M |
T |
N |
Slot number | Cross recess insertion depth | ||||||||||
|
max |
min |
max |
min |
max |
min |
max |
min |
||||||||||||
|
#0 |
0.116 |
0.104 |
0.044 |
0.036 |
0.060 |
0.030 |
0.013 |
0 |
0.032 |
0.014 |
0.060 |
0.032 |
0.018 |
0 |
0.033 |
0.017 |
|||
|
#1 |
0.142 |
0.130 |
0.053 |
0.044 |
0.068 |
0.035 |
0.014 |
0 |
0.040 |
0.022 |
0.068 |
0.039 |
0.018 |
0 |
0.040 |
0.024 |
|||
|
#2 |
0.167 |
0.155 |
0.062 |
0.053 |
0.098 |
0.050 |
0.017 |
1 |
0.052 |
0.034 |
0.098 |
0.056 |
0.028 |
1 |
0.053 |
0.037 |
|||
|
#3 |
0.193 |
0.180 |
0.071 |
0.062 |
0.106 |
0.059 |
0.019 |
1 |
0.061 |
0.043 |
0.106 |
0.065 |
0.029 |
1 |
0.062 |
0.046 |
|||
|
#4 |
0.219 |
0.205 |
0.080 |
0.070 |
0.116 |
0.069 |
0.019 |
1 |
0.071 |
0.053 |
0.116 |
0.075 |
0.029 |
1 |
0.072 |
0.056 |
|||
|
#5 |
0.245 |
0.231 |
0.089 |
0.079 |
0.152 |
0.070 |
0.028 |
2 |
0.072 |
0.046 |
0.148 |
0.075 |
0.040 |
2 |
0.068 |
0.050 |
|||
|
#6 |
0.270 |
0.256 |
0.097 |
0.087 |
0.160 |
0.078 |
0.028 |
2 |
0.080 |
0.055 |
0.156 |
0.083 |
0.040 |
2 |
0.076 |
0.058 |
|||
|
#7 |
0.296 |
0.281 |
0.106 |
0.096 |
0.170 |
0.088 |
0.029 |
2 |
0.089 |
0.064 |
0.164 |
0.092 |
0.041 |
2 |
0.085 |
0.067 |
|||
|
#8 |
0.322 |
0.306 |
0.115 |
0.105 |
0.176 |
0.095 |
0.030 |
2 |
0.097 |
0.071 |
0.170 |
0.099 |
0.041 |
2 |
0.092 |
0.074 |
|||
|
#10 |
0.373 |
0.357 |
0.133 |
0.122 |
0.192 |
0.112 |
0.031 |
2 |
0.113 |
0.089 |
0.186 |
0.115 |
0.041 |
2 |
0.108 |
0.090 |
|||
|
#12 |
0.425 |
0.407 |
0.151 |
0.139 |
0.252 |
0.128 |
0.034 |
3 |
0.124 |
0.098 |
0.248 |
0.130 |
0.056 |
3 |
0.117 |
0.099 |
|||
|
#14 |
0.476 |
0.457 |
0.169 |
0.156 |
0.274 |
0.148 |
0.036 |
3 |
0.144 |
0.118 |
0.266 |
0.150 |
0.057 |
3 |
0.137 |
0.119 |
|||
|
1/4 |
0.492 |
0.473 |
0.175 |
0.162 |
0.274 |
0.148 |
0.036 |
3 |
0.144 |
0.118 |
0.266 |
0.150 |
0.057 |
3 |
0.137 |
0.119 |
|||
|
#16 |
0.528 |
0.508 |
0.187 |
0.173 |
0.286 |
0.162 |
0.037 |
3 |
0.158 |
0.132 |
0.278 |
0.162 |
0.057 |
3 |
0.149 |
0.131 |
|||
|
#18 |
0.579 |
0.558 |
0.205 |
0.191 |
0.328 |
0.166 |
0.056 |
4 |
0.158 |
0.134 |
0.322 |
0.169 |
0.084 |
4 |
0.152 |
0.134 |
|||
|
5/16 |
0.615 |
0.594 |
0.218 |
0.203 |
0.344 |
0.181 |
0.059 |
4 |
0.173 |
0.149 |
0.334 |
0.182 |
0.086 |
4 |
0.164 |
0.146 |
|||
|
#20 |
0.631 |
0.608 |
0.223 |
0.208 |
0.344 |
0.181 |
0.059 |
4 |
0.173 |
0.149 |
0.344 |
0.182 |
0.086 |
4 |
0.164 |
0.146 |
|||
|
#24 |
0.734 |
0.709 |
0.259 |
0.242 |
0.382 |
0.222 |
0.065 |
4 |
0.213 |
0.190 |
0.370 |
0.219 |
0.086 |
4 |
0.201 |
0.183 |
|||
|
3/8 |
0.740 |
0.716 |
0.261 |
0.244 |
0.382 |
0.222 |
0.065 |
4 |
0.213 |
0.190 |
0.370 |
0.219 |
0.086 |
4 |
0.201 |
0.183 |
|||
|
7/16 |
0.863 |
0.837 |
0.305 |
0.284 |
0.406 |
0.246 |
0.068 |
4 |
0.239 |
0.214 |
0.392 |
0.242 |
0.086 |
4 |
0.224 |
0.206 |
|||
|
1/2 |
0.987 |
0.958 |
0.348 |
0.325 |
0.428 |
0.268 |
0.071 |
4 |
0.260 |
0.235 |
0.414 |
0.264 |
0.086 |
4 |
0.246 |
0.228 |
|||
Remarks: Thread and tail end form, refer to ASME B18.6.3-2010 AB, A, B, BP, BF, BT, D, F, G, T type thread and tail end
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