Countersunk Wood Screws China Factory Leading Suppliers of DIN 97 ISO 7050 Fasteners
Longze Cross Recessed Countersunk Wood Screws are precision-engineered fastening solutions manufactured to rigorous DIN 97, ISO 7050, and ASME B18.6.1 standards. Designed specifically for high-end cabinetry, furniture assembly, and structural timber framing, these screws feature a flat countersunk head and a high-efficiency Phillips drive, ensuring a seamless, flush finish that eliminates snagging and enhances the aesthetic quality of any woodworking project.
Engineered for versatility and strength, our wood screws are available in multiple premium materials, including Marine Grade SS316 for coastal environments and Case-Hardened Carbon Steel for general carpentry. With deep-cut threads designed to maximize grip and minimize wood splitting, Longze provides the professional-grade reliability required for both industrial manufacturing and precision DIY applications worldwide.
Detailed Parameters
| Compliance Standards | DIN 97 / ISO 7050 / ASME B18.6.1 / JIS B1112 | Drive Type | Phillips (Cross Recess) / Pozi / Torx |
|---|---|---|---|
| Metric Size Range | 2.5 mm to 10.0 mm (Diameter) | Inch Size Range | #4 to #24 (Diameter) |
| Length Range | 10 mm to 200 mm | Material Options | Carbon Steel / SS304 / SS316 / Solid Brass |
| Surface Finishes | Zinc Plated, Black Oxide, Brass Plated, Plain | Head Angle | 90° (Metric) / 82° (Imperial) |
| Tensile Strength | 450 MPa to 600+ MPa (Depending on grade) | Point Type | Sharp Gimlet Point |
Key Advantages
Premium Corrosion Resistance
Available in SS316 marine grade and hot-dip galvanized coatings to withstand extreme salt spray and outdoor moisture.
Rapid Installation
The precision Phillips cross-recess minimizes cam-out and allows for high-speed installation with power drivers.
Flush Surface Finish
Engineered countersunk heads ensure the screw sits perfectly level with the timber for a professional, clean look.
Superior Grip Strength
Deep-cut specialized threads engage wood fibers tightly, providing exceptional pull-out resistance.
Self-Centering Point
The sharp gimlet point ensures immediate engagement and alignment upon contact with the material.
Global Standard Compliance
Fully compatible with international Metric and Imperial specifications for seamless global project integration.
Product Gallery
Management Platforms
ISO 9001 Quality Control
Certified production processes with automated optical inspection for head concentricity.
Bend Testing Protocol
Every batch is tested to withstand a 30-45 degree bend without fracturing.
Thread Sharpness Audit
Rigorous verification of gimlet points to ensure immediate wood fiber engagement.
Salt Spray Testing
Coating durability verification from 24h to 1000h depending on the finish type.
Export Packaging
Secure 25kg bulk export cartons on fumigation-free pallets for international shipping.
Custom Retail Solutions
Available in window-packs, small boxes, or tubs for direct-to-consumer retail.
Investment Return Comparison
| Material Grade | Corrosion Life | Best Application |
|---|---|---|
| Carbon Steel (Zn) | Short-Medium | Indoor Furniture / MDF |
| Stainless SS304 | Long | Kitchen / Bathroom / Decks |
| Stainless SS316 | Ultra-Long | Marine / Coastal Structures |
| Hot-Dip Galv. | Very Long | Outdoor Fencing / Heavy Timber |
| Solid Brass | Medium (Aesthetic) | Antique Furniture Restoration |
Frequently Asked Questions
Phillips is the global standard for machine-driven assembly. Pozi drive provides additional engagement points for higher torque, which is often preferred in specific European woodworking markets.
Yes, they are compatible with MDF. However, we strongly recommend drilling a pilot hole first to prevent the edges of the composite board from bulging or splitting under pressure.
Pressure-treated timber contains chemicals that can corrode standard zinc-plated fasteners. We recommend using Stainless Steel (SS304/SS316) or Hot-Dip Galvanized screws for these applications.
Ensure the driver bit is fully seated in the head and kept perfectly perpendicular to the surface. Using the correct bit size (e.g., PH2 for 4.0mm screws) is critical to prevent damage.
A smooth upper shank allows the screw to pull the "top" board tightly against the base material, ensuring a gap-free, structural joint.
Yes, in addition to bulk export cartons, Longze offers custom retail packaging including window-packs, plastic tubs, and branded small boxes.
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