Bugle Head Drywall Screw Coarse thread
Coarse thread bugle head drywall screws are self-tapping fasteners for attaching gypsum board to wood studs. Featuring bugle head to prevent paper tearing and strong coarse threads for excellent pull resistance. Black phosphate finish, C1022 hardened steel, #2 Phillips drive. Widely used in drywall partition and ceiling installation.
Bugle head coarse thread drywall screws are self-tapping fasteners engineered specifically for fixing gypsum plasterboard onto wood studs, plywood and wooden substrates. The bugle-shaped head distributes pressure evenly, sinks gently into drywall without tearing the paper surface, and leaves a smooth recess ready for joint compound. The wide-pitch coarse thread delivers superior holding power in wood, resisting pull-out and ensuring long-term stability for interior partition walls, ceilings and drywall systems.
Key Features
- Bugle Head Design: Curved countersunk head avoids gypsum paper damage, achieves flush finishing and reduces pre-finish repair work.
- Coarse Thread Profile: Deep, widely spaced threads bite firmly into wood, provide high withdrawal resistance and speed up driving.
- #2 Phillips Recess: Precise cross drive for stable bit engagement, minimizes cam-out and screw stripping during installation with screw guns.
- Sharp Self-Tapping Point: No pre-drilling required, fast penetration and improved construction efficiency.
- Material & Heat Treatment: Made of hardened C1022 carbon steel, meets grade 4.8 mechanical performance.
- Surface Finish: Standard black phosphate coating for indoor anti-rust protection; zinc plated or stainless steel options available for humid/corrosive environments.
- Full Size Range: Metric sizes M3.5, M4.2; inch sizes #6, #8, covering lengths from 16mm up to 100mm.
Applications
- Fasten gypsum drywall / plasterboard to wooden studs, joists, plywood and MDF
- Interior partition walls, suspended ceilings, drywall lining works
- General wood & gypsum board interior decoration projects Note: Coarse thread version is for WOOD framing; select fine thread drywall screws for metal studs.
Technical Specifications
| Item | Details |
|---|---|
| Product Name | Bugle Head Drywall Screw, Coarse Thread |
| Material | C1022A Hardened Carbon Steel |
| Head Type | Bugle Countersunk Head |
| Drive | Phillips #2 |
| Thread | Coarse Self-Tapping Thread |
| Point | Sharp Tapping Point |
| Surface | Black Phosphate (standard) / Zinc Plated / SS304 optional |
| Standards | GB, ANSI, ISO, CE available |
Installation Tips
- Use an adjustable depth screw gun to avoid over-driving which crushes the gypsum board.
- Screw penetration into wood substrate shall be at least 12mm for reliable grip.
- For high-humidity areas, choose zinc-plated or stainless steel variants.
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