| Item | Details |
|---|---|
| Product Name | Fine Thread Self Drilling Drywall Screw |
| Raw Material | Grade 4.8 carbon steel |
| Surface Treatment | Black phosphate coated |
| Available Sizes | 3.5mm, 3.8mm, 4.2mm, custom long lengths supported |
| Structure | Countersunk Phillips head, smooth shank, fine thread, self-drilling drill point tip |
| Fit For | Drywall sheet, light steel keel, thin metal stud, interior partition wall construction |
| Advantages | Built-in drill tip eliminates pre-drilling to boost installation efficiency; fine thread provides stable clamping force for thin gypsum boards; countersunk head fully sinks into drywall for flat seamless wall surface; black phosphate finish reduces paint adhesion interference during wall finishing; sharp tip penetrates thin steel studs smoothly without bending screw body |
| Application Range | Interior drywall partition installation, ceiling keel fixing, gypsum board cladding, indoor light steel frame construction |
| Custom Service | Custom overall length, zinc plated coating alternative, coarse thread version available, customized drill point size |
This fine thread self drilling drywall screw is a dedicated fastener for indoor gypsum board and light steel keel assembly.
It is cold forged from Grade 4.8 carbon steel with full black phosphate coating, which avoids rust during indoor construction and creates a matte surface that blends well with wall putty and paint finishing work. The integrated self-drilling tip can drill through thin metal keels directly, cutting down construction steps and saving labor time.
Fine dense thread tightly locks gypsum board onto metal frames, preventing board sagging and cracking after long-term use. The Phillips countersunk head embeds completely under the drywall surface, leaving no raised bumps to affect subsequent wall plastering and painting procedures.
Different from wood thread drywall screws, this self-drilling model is designed for fixing drywall to metal supports, widely used in office and residential interior decoration projects. All finished screws pass drilling performance and pull-out load tests before delivery to meet interior construction hardware standards. Contractors can customize screw length and surface coating according to actual partition wall engineering demands.
