Black Phosphate High Strength Drywall Screws, Self-Tapping Screws for Gypsum Board & Steel Keel

These phosphated drywall screws are high-strength self-tapping fasteners for decoration projects, available in coarse and fine thread types with precise threads, smooth drilling performance, anti-slip and anti-break features, rust and moisture resistance, widely used for fixing gypsum boards, light steel keels and wood panels in residential and commercial ceiling and partition construction.

Product Type: Self-tapping drywall screws with black phosphated finish

Material: National standard high-quality low-carbon steel

Wire Diameter: 3.5 mm; 3.8 mm; 4.0 mm

Length Range: 25 mm - 50 mm

Thread Type: Coarse thread for solid wood and MDF; Fine thread for gypsum board and calcium silicate board

Head Type: Standard cross countersunk head

Description

Drywall screws are essential standard fastening hardware widely used in architectural decoration, interior engineering and whole-house renovation. As professional specialized fasteners for wall construction, high-quality drywall screws have become the preferred choice for gypsum board installation, keel fixing and interior decoration projects worldwide. These drywall screws are manufactured with high-quality low-carbon steel materials through a complete set of automated precision production processes, including wire drawing, integral forming, thread rolling, hardening tempering and black phosphating surface treatment.

The thread of each drywall screw is neat, uniform and standard, effectively avoiding common problems such as thread slipping, broken teeth and nail breakage during construction. Adopting professional black phosphating finishing, the surface of the drywall screws is compact and smooth, delivering excellent rust resistance, oxidation resistance and wear resistance without extra coating. The stable physical properties enable the drywall screws to adapt to various indoor dry and humid environments, maintaining long-term structural stability without aging or rusting. Designed with a standard cross countersunk head and sharp self-drilling tip, these drywall screws feature uniform stress bearing and strong self-tapping penetration.

They can quickly drill into gypsum boards, wood panels and light steel keels without pre-drilling holes, greatly improving construction efficiency and saving labor costs. Available in coarse thread and fine thread types, the drywall screws meet diverse construction demands: coarse thread drywall screws provide stronger gripping force for solid wood material fixing, while fine thread drywall screws ensure tighter and flatter fitting for precise gypsum board ceiling and partition installation. Fully compatible with all kinds of manual and electric screwdriver tools, these versatile drywall screws are easy to install with high fault tolerance, leaving flat and neat finished surfaces without secondary repair. Widely applied in home decoration ceiling and partition construction, commercial engineering renovation, light steel keel assembly, furniture board fixing and indoor soft furnishing installation, these durable drywall screws are cost-effective and reliable standard fasteners for the global construction and decoration industry.

Technical Specifications

This series of drywall screws are standard self-tapping fastening fasteners specially designed for decoration engineering, covering common wire diameters of 3.5mm, 3.8mm and 4.0mm, as well as multiple length specifications from 25mm to 50mm, realizing accurate matching for different construction scenarios. Made of national standard high-quality low-carbon steel, the drywall screws are processed by high-temperature hardening and tempering treatment, with uniform hardness and moderate toughness. They effectively avoid common construction defects such as head cracking, screw breaking and thread slipping, delivering more stable mechanical performance than ordinary fasteners.

Adopting precision thread rolling technology, the drywall screws feature consistent thread depth, standard pitch and full tooth shape, ensuring smooth screwing and tight locking with various base materials without loosening. The surface is finished with eco-friendly black phosphating treatment with uniform and stable coating, no oil pollution or impurities, providing excellent anti-corrosion, anti-oxidation and moisture-resistant performance, which is perfectly suitable for long-term humid indoor environments such as ceilings and partition walls. Designed with standard cross countersunk heads, the drywall screws align accurately with all mainstream electric and manual screwdrivers, sinking neatly into plates without protruding for a smooth finish without secondary polishing.

The product line includes coarse thread and fine thread types for differentiated use: coarse thread drywall screws feature larger occlusion stroke and stronger gripping force for solid wood and MDF fixing, while fine thread drywall screws with delicate threads are dedicated to precise installation of light plates such as gypsum boards and calcium silicate boards. All drywall screws have passed strict compression, tensile and torsion tests with tiny dimensional tolerance and consistent batch quality. The standardized packaging prevents scattered screws, making them ideal universal fasteners for residential decoration, commercial engineering and large-scale construction projects.

Faq

What products do you mainly supply?

We specialize in manufacturing and exporting a full range of building hardware, including door & window handles, hinges, drawer slides, wood screws, staples and other fasteners. Our products are widely used in home decoration, furniture manufacturing and construction engineering projects.

Can you support OEM & ODM customization?

Yes. We accept OEM and ODM orders. We can customize product specifications, surface finishes, logos, packaging and size according to your drawings or requirements to match your market and project demands.

What is your MOQ (minimum order quantity)?

The MOQ depends on different items. For standard in-stock hardware products, we support small trial orders. For customized OEM goods, the MOQ will be adjusted accordingly, please contact us for details.

Can you provide one-stop supply solutions for our project?

Yes. We provide a one-stop building material supply solution with complete product categories. For overseas clients, we offer full-cycle foreign trade services including product selection, customized matching, whole-order supporting, logistics docking and after-sales warranty, so you can source hardware, fasteners and adhesives from a single supplier.

How do you control your product quality?

We implement strict quality control throughout the whole production process. Raw material inspection, dimension testing, salt spray corrosion test and load fatigue test will be carried out before shipment. We can also provide relevant test reports for your project bidding.

How do you handle domestic logistics and global shipping?

We operate 13 exclusive delivery trucks, building an independent and fast domestic logistics distribution system that ensures efficient sorting, timely delivery and bulk shipment, greatly shortening the delivery cycle for global orders. Our sales network covers the whole China and dozens of countries and regions around the world, forming a three-dimensional market pattern of domestic deep cultivation and global radiation.

What certificates can you provide?

We can provide quality test reports, material certificates and other supporting documents. Our hardware products meet mainstream standards for construction and furniture industry, suitable for global engineering and wholesale markets.