Drywall Screw — Coarse & Fine Thread, Bugle Head
Drywall screws have a bugle-shaped head that countersinks into drywall paper without tearing it, plus an aggressive thread that drives into wood or thin metal studs. Coarse thread for wood studs; fine thread for metal studs. Almost universally Phillips #2 drive.
Specifications
| Head Type | Bugle (countersinks into drywall) |
|---|---|
| Drive | Phillips #2 (most common); Square drive less common |
| Thread | Coarse (wood stud) or Fine (metal stud / 25-gauge or thinner) |
| Length | 20 mm – 200 mm (3/4" – 8") |
| Surface Finish | Black phosphate (most common), gray phosphate, zinc plated |
| Packaging | Bulk 25 lb / 50 lb cartons, 1 lb jars, 5 lb buckets |
Frequently Asked Questions
Coarse thread or fine thread — which do I need?
Coarse thread for wood studs (the deep thread bites into the wood and pulls the screw in fast). Fine thread for metal studs (the closely-pitched thread cuts into the steel without stripping). Using coarse thread on metal will strip; using fine thread on wood will be slow and prone to spinning.
Why are drywall screws black?
The traditional black color comes from a phosphate conversion coating that provides modest corrosion resistance during construction (between framing and finishing). It's not for permanent outdoor use — for that, choose deck screws or stainless screws.
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