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Drywall Screw
These screws are designed to fasten drywall to studs. They have a curved neck so the head sits flush in the drywall without tearing the paper surface. Most are designed to fasten to wood but some can fasten to metal. They are even available with a drill point for thicker gage sheet metal.
Dimensions - Coarse Thread
| Size | TPI | Dia. |
|---|---|---|
| 6 | 8 to 10 | 0.142 - 0.158 |
| 7 | 8 to 10 | 0.153 - 0.172 |
| 8 | 8 to 10 | 0.160 - 0.187 |
| 9 | 8 to 10 | 0.177 - 0.194 |
| 10 | 8 to 9 | 0.190 - 0.211 |
| 12 | 8 to 9 | 0.218 - 0.238 |
| 1/4 | 8 to 9 | 0.252 - 0.270 |
Dimensions - Fine Thread
| Size | TPI | Dia. |
|---|---|---|
| 6 | 18 | 0.135 - 0.144 |
| 7 | 16 | 0.147 - 0.156 |
| 8 | 15 | 0.161 - 0.170 |
| 10 | 14 | 0.193 - 0.201 |
Note: There is no dimensional standard for drywall screws. Thread per inch may vary depending on manufacturer.