| Item | Details |
|---|---|
| Product Name | Coarse Thread Drywall Screw |
| Raw Material | Grade 4.8 carbon steel |
| Surface Treatment | Black phosphate coated |
| Available Sizes | 3.5mm, 3.9mm, 4.2mm, customized long lengths available |
| Structure | Countersunk Phillips head, full coarse wood thread, sharp self-piercing tip |
| Fit For | Drywall sheets, wooden studs, timber joists, interior wall & ceiling decoration |
| Advantages | Deep coarse thread bites firmly into wood studs with superior pull-out resistance; countersunk head fully recesses into gypsum board for smooth wall finish; black phosphate matte surface fits plaster & paint finishing; sharp tip drives into timber directly without pre-drilling; uniform thread prevents drywall sagging after long-term use |
| Application Range | Indoor drywall installation, ceiling board fixing, partition wall with wood frame, residential interior renovation |
| Custom Service | Custom total length, zinc plated coating alternative, fine thread self-drilling version optional, special tip customization |
This coarse thread drywall screw is specially designed for fastening gypsum boards to wooden framing materials.
Manufactured from Grade 4.8 carbon steel with black phosphate coating, it provides basic anti-rust performance for indoor construction environments, and its matte black surface will not cause discoloration after wall putty and paint coating. The extra deep coarse thread tightly interlocks with wood fibers, avoiding loose connection and drywall sagging caused by wood shrinkage.
The Phillips countersunk head can be completely buried under drywall surface, eliminating protruding heads that ruin flat wall decoration effect. The sharp piercing tip can easily penetrate softwood and plywood without pre-drilling holes, greatly improving construction efficiency.
Distinct from fine thread self-drilling drywall screws for metal keels, this coarse thread model matches all kinds of wooden wall frames, widely used in home and commercial interior decoration projects. All finished screws pass pull-out load and surface anti-corrosion inspection before shipment to meet interior construction hardware standards. Buyers can customize screw length and surface finish based on actual renovation projects.
