Product Introduction
Grey phosphated drywall screws are used for fixing gypsum boards to wood studs or light-gauge metal framing in interior wall and ceiling systems.
Technical Specifications
| Parameter | Specification |
| Material | Carbon Steel (C1022 / C1022A) |
| Diameter | 3.5 mm / 3.9 mm / 4.2 mm / 4.8 mm |
| Length | 13 mm – 152 mm |
| Head Type | Bugle / Countersunk |
| Drive Type | Phillips (PH2 / PH3 depending on diameter) |
| Thread Type | Fine Thread (metal studs) / Coarse Thread (wood studs) |
| Surface Finish | Grey Phosphate Coating |
| Point Type | Self-tapping, sharp tip for wood; drill point optional for light metal studs |
| Hardness | Case-hardened for penetration without pre-drilling |
| Standards | DIN 18182, ASTM C1002 |
| Application | Drywall installation, partition walls, suspended ceilings, light steel keel systems, acoustic and decorative boards |
| Environment | Indoor, non-structural applications |
Key Features
Bugle head design for flush embedding into gypsum board surface without surface damage
Deep thread geometry improves pull-out resistance in soft and semi-hard substrates
Self-tapping point enables direct engagement into wood and light-gauge steel studs
Grey phosphate coating reduces friction and improves driving consistency in high-volume installation
Applications
Interior wall partitions using gypsum boards
Suspended ceilings and light steel keel frameworks (fine thread drywall screws for metal studs recommended in steel ceiling systems)
Wall repair, panel replacement, and finishing works
Acoustic panels and decorative board installation
Thread Selection Guide
| Thread Type | Recommended Material | Functional Advantage |
| Fine Thread | Metal studs | Improved grip in steel framing, reduced stripping risk |
| Coarse Thread | Wood studs | Faster driving, strong mechanical bite in timber |
Standards & Certifications
Manufactured according to DIN 18182 and ASTM C1002 standards
Case-hardened carbon steel ensures material compliance with standard tolerances
Grey phosphate coating provides basic corrosion resistance for indoor use
Manufacturing Capability
Consistent thread geometry and hardness for batch-to-batch reliability
Full size availability for different drywall systems
OEM and private labeling supported for project and distribution requirements
Designed for high-volume supply chains and export markets
FAQ
Q: Are grey phosphated drywall screws suitable for structural applications?
A: No. They are designed for non-structural interior applications such as drywall partition systems and ceiling installations.
Q: What type of screwdriver or tool is recommended for installation?
A: Phillips drive screwdrivers or electric drywall screw guns (PH2 or PH3 depending on screw diameter) are commonly used.
Q: Can these screws be used with power tools for high-volume installation?
A: Yes. They are designed for continuous installation using electric screw guns in large-scale drywall fastening systems.
Q: How should screw length be selected for drywall systems?
A: Length is selected based on gypsum board thickness and the required penetration depth into wood or metal studs within the installation system.
Q: Are these screws suitable for humid or outdoor environments?
A: No. Grey phosphate coating is intended for indoor use and does not provide long-term corrosion resistance in outdoor or high-humidity environments.
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