Hex head screws

Industrial-Grade Hex Head Self Drilling Screws for Heavy-Duty Fastening

For B2B buyers seeking reliable, high-performance fastening solutions, our hex head self drilling screws deliver superior strength, corrosion resistance, and installation efficiency. Designed for metal roofing, steel framing, HVAC systems, and industrial construction, these screws eliminate the need for pre-drilling, saving time and labor costs on large-scale projects.

With 50+ standard sizes in stock and custom manufacturing capabilities, we serve OEMs, contractors, and distributors with high-volume orders and specialized fastener solutions.

Why Choose Our Hex Head Self Drilling Screws?

✅ 50+ Standard Sizes – Available in #8 to 1/4″ diameters and 3/4″ to 6″ lengths to fit diverse applications.
✅ Multiple Corrosion-Resistant Coatings – Hot-dipped galvanized, color zinc (彩锌), and phosphated for enhanced durability.
✅ Self-Drilling & Self-Tapping – No pilot holes required, reducing installation time by up to 40%.
✅ High Tensile Strength (≥ 1000 MPa) – Made from carbon steel or stainless steel for heavy-load applications.
✅ Bulk Order Discounts – Competitive pricing for wholesale, construction firms, and OEM partners.

Premium Surface Treatments for Maximum Longevity

To withstand harsh environments, we offer three advanced coating options:

1. Hot-Dipped Galvanized (HDG) Coating

• 80+ micron zinc layer for superior rust protection

• Ideal for outdoor construction, marine environments, and industrial equipment

2. Color Zinc (彩锌) Coating

• Aesthetic finish with enhanced corrosion resistance

• Commonly used in architectural metal panels, electrical enclosures, and visible structures

3. Phosphated Coating

• Improves paint adhesion and lubricity

• Preferred for automotive parts, machinery, and painted assemblies

Each batch undergoes strict salt spray testing (ASTM B117) to ensure 500+ hours of rust resistance.

Large-Scale Production & Custom Manufacturing Capabilities

As a leading hex head self drilling screw manufacturer, we operate a 30,000㎡ automated facility with:

🔹 50+ cold forging machines for high-volume production
🔹 In-house coating & plating lines for quality control
🔹 Monthly output of 800/ton screws (expandable to 12/ton with demand)
🔹 ISO 9001 & CE-certified processes

Customization Services for OEM/ODM Clients

We specialize in tailored fastener solutions, including:
✔ Non-standard diameters/lengths
✔ Custom head markings & logos
✔ Special thread designs (e.g., fine/coarse pitch)
✔ Unique packaging (vibration tape, bulk boxes, or customer-specified)

Trusted by Global B2B Clients

Our screws are used in:
🏗 Steel structure construction
🏭 Pre-engineered metal buildings
🔌 Electrical cabinet manufacturing
🚛 Trailer & transportation equipment

Why professionals choose us:
📌 30-day lead time for standard orders (15 days for urgent requests)
📌 100/ton+ screws in stock for immediate shipment
📌 Free samples & technical drawings available

Request a Quote Today

For bulk pricing, custom specifications, or OEM partnerships, contact our sales team.

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