Description
Hex washer head self-drilling screw with a drill point that drills, taps and fastens in one operation, yellow zinc coated for roofing, cladding and light steel structure installation.
Drill point eliminates separate drilling and saves installation time; bonded washer seals against water and dust; hardened steel point penetrates steel up to 6 mm; yellow zinc trivalent coating for outdoor corrosion resistance.
| Parameter | Value |
|---|---|
| Surface | Yellow zinc plated |
| Head | Hex washer head |
| Drill Point | No.2 point; No.3 point |
| Size Range | ST4.2 - ST6.3 |
| Steel Penetration | 0.5 - 6 mm |
| Application | Roofing; cladding; steel structures |
Faq
We are a professional manufacturer of fasteners, integrating production, R&D and export. We welcome customers to visit our factory.
Yes. We can produce custom bolts, nuts and non-standard parts according to your drawings, samples or technical requirements.
We supply carbon steel, stainless steel, alloy steel, nylon and other materials. Surface treatments such as zinc plating, hot-dip galvanizing are available.
For standard fasteners, small trial orders are acceptable. For customized non-standard products, MOQ depends on the production process.
Standard items usually take 7–15 days. Custom products will be confirmed based on drawings and order quantity.
Yes. We can offer material test certificates, dimension inspection reports and related documents to meet international standards.
We support T/T, L/C and other negotiable payment terms for international business.
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