Drywall Screws – Coarse Thread | 3.5 mm Diameter | Black Phosphate | PH2 | 25–60 mm
High-performance coarse-thread drywall screws designed for fast, secure attachment of gypsum board (drywall) to wood studs, battens, or other timber framing. Manufactured from high-grade carbon steel with a black phosphate coating, these screws offer excellent corrosion resistance, reduced friction during driving, and a professional dark finish that blends discreetly behind joint compounds and paint.
Key Specifications
- Diameter: 3.5 mm
- Thread Type: Coarse (wide, deep threads optimized for maximum grip in softwood and engineered timber)
- Drive: Phillips #2 (PH2) – deep recess for high torque transmission and reduced cam-out
- Head Style: Bugle head (countersunk) – provides clean, flush seating in drywall paper without tearing
- Point: Sharp piercing point for quick self-starting and minimal pre-drilling
- Lengths Available: 25 mm, 32 mm, 38 mm, 42mm, 45 mm, 50 mm, 55 mm, 60 mm
- Material: Hardened carbon steel
- Finish: Black phosphate (dry film lubricant + corrosion protection)
- Standard: Manufactured to meet or exceed EN 14592 and typical industry performance requirements for drywall fastening
Features & Benefits
- Coarse Thread Profile – Delivers superior holding power in wood while allowing rapid installation with minimal splitting.
- Black Phosphate Coating – Provides good indoor corrosion resistance and acts as a lubricant, enabling smoother, faster driving with less effort and lower risk of screw breakage.
- Bugle Head Design – Creates a wide bearing surface that pulls the drywall tightly against the framing without damaging the face paper.
- PH2 Drive – Optimized recess depth ensures excellent bit engagement even at high RPM with cordless screwdrivers.
- Consistent Quality – Precise thread rolling, sharp points, and uniform heat treatment for reliable performance across high-volume jobs.
Typical Applications
- Fixing standard, fire-rated, moisture-resistant, or acoustic gypsum boards to timber studs and battens
- Wood-to-wood fastening where high pull-out resistance is required
- Interior fit-out, renovation, and refurbishment projects
- Ceiling and partition installations
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