Self Drilling Screws from China Suppliers | Quality Products from Reliable Factory
📋 Product Specifications
| Product Name | Wood Screw |
| Size | 4.2mm / 4.8mm / 5.5mm / 6.3mm |
| Length | 10 – 300mm |
| Grade | 8.8 / A2-70 / A4-70 |
| Material | Steel / SWCH22A, C1022A / Stainless Steel |
| Surface Treatment | Zinc / YZinc / Plain |
| Standard | DIN / ISO / UINZ |
| Certificate | ISO 9001 ✓ Certified |
| Sample | Free Samples Free |
| Usage |
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❓ Frequently Asked Questions
Q
What sizes and lengths are available for your wood screws?
Our wood screws are available in four diameter options — 4.2mm, 4.8mm, 5.5mm, and 6.3mm — with lengths ranging from 10mm to 300mm, covering a wide variety of installation requirements from light furniture to heavy structural applications.
Q
What materials are used to manufacture these wood screws?
Our wood screws are manufactured from high-strength steel grades (SWCH22A and C1022A) as well as stainless steel. The choice of material affects both load-bearing capacity and corrosion resistance, allowing selection based on your specific application environment.
Q
What surface treatment options do you offer, and which should I choose?
We offer Zinc plating, YZinc plating, and Plain (untreated) finishes. Zinc and YZinc treatments significantly improve corrosion resistance and are recommended for outdoor, humid, or marine-adjacent environments. Plain finish is suitable for dry indoor applications where a natural look is preferred.
Q
Are your wood screws compliant with international quality standards?
Yes. Our products are manufactured in accordance with DIN, ISO, and UINZ standards. Our facility holds ISO 9001 certification, which guarantees consistent quality management processes from raw material selection through to finished product inspection.
Q
Can I request free samples before placing a bulk order?
Yes, we offer free samples to all prospective customers. This allows you to evaluate dimensional accuracy, surface quality, and mechanical performance before committing to a large order. Please contact our sales team with your size and material requirements to arrange sample delivery.
Q
What grade options are available and how do they differ?
Three grade options are available: Grade 8.8 is a high-strength carbon steel option suited for structural and load-bearing applications; A2-70 is a standard austenitic stainless steel grade offering good corrosion resistance for general use; A4-70 is a marine-grade stainless steel with superior resistance to chloride environments, ideal for coastal or chemical-exposure settings.


