Flat
Head Thread Cutting Screw
| TYPES 1 , 23 and 25 Thread
Cutting Screw |
| |
Screw Size |
2 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
1/4 |
| G |
Head Diameter |
Max |
.172 |
.199 |
.225 |
.252 |
.279 |
.332 |
.385 |
.438 |
.507 |
| Min |
.147 |
.171 |
.195 |
.220 |
.244 |
.292 |
.340 |
.389 |
.452 |
| H |
Head Height |
Max |
.051 |
.059 |
.067 |
.075 |
.083 |
.100 |
.116 |
.132 |
.153 |
| Min |
.040 |
.048 |
.055 |
.062 |
.069 |
.084 |
.098 |
.112 |
.131 |
| S |
Slot Width |
Max |
.031 |
.035 |
.039 |
.043 |
.048 |
054 |
.060 |
.067 |
.075 |
| Min |
.023 |
.027 |
.031 |
.035 |
.039 |
045 |
.050 |
.056 |
.064 |
| T |
Slot Depth |
Max |
.023 |
.027 |
.030 |
.034 |
.038 |
.045 |
.053 |
.060 |
.070 |
| Min |
.015 |
.017 |
.020 |
.022 |
.024 |
.029 |
.034 |
.039 |
.046 |
| S1 |
Recess Diameter |
Max |
.102 |
.107 |
.128 |
.154 |
.174 |
.189 |
.204 |
.268 |
.283 |
| Min |
.089 |
.094 |
.115 |
.141 |
.161 |
.176 |
.191 |
.255 |
.270 |
| |
Penertration Gaging Depth |
Max |
.056 |
.061 |
.082 |
.075 |
095 |
.110 |
.125 |
.139 |
.154 |
| |
Min |
.040 |
.045 |
.066 |
.052 |
072 |
.087 |
.102 |
.116 |
.131 |
| |
Driver Size |
1 |
1 |
1 |
2 |
2 |
2 |
2 |
3 |
3 |
Absolute Mm. with Flat
For explanation of penetration gaging,
refer to NASI 818.6.4-.-1966(R1975) Appendix
IV
|
