Screw types
Screws are self-threading fasteners — they cut or form their own mating thread as they are driven. The correct screw type depends on the material being fastened and the load requirements.
| Type | Thread | Tip | Primary material |
|---|---|---|---|
| Wood screws | Coarse, tapered | Sharp point | Softwood, hardwood |
| Machine screws | Fine, uniform | Blunt | Tapped metal, plastic |
| Drywall screws | Coarse or fine | Sharp point | Gypsum board to wood or metal stud |