| Customization: | Available |
|---|---|
| Material: | Carbon Steel |
| Type: | Hexagon Head |
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Double threaded or Sandwich panel screws are specialty fasteners for roofing panels. It is suitable for connecting different exterior roofing materials in sandwich panel construction. The drilling point works on steel to steel structures.
Steel washer or Aluminum washer are available for selection.
| Name | Hex Washer Head Self-Drilling,Double Thread Sandwich Panel Screw |
| Steel Material | Carbon Steel |
| Shape of Head | Hex Head |
| Length | 19-300mm |
| Specification | M6,M8 |
| Surface Treatment | Hot Galvanized, Black, Color-Zinc, Blue White Zinc,Dacromet |
| Certification | ISO, ISO9001 |
| Class/Grade | 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 |
| Application | for Sandwich Panel Screw |
A: Yes! Customization is our specialty. We offer tailored solutions for unique head shapes, thread types, lengths, and materials. Just share your drawings or samples, and we'll handle the rest.
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2. Q: What's the minimum order quantity (MOQ)?
A:We understand small orders! Our MOQ starts from 100,000 pieces for standard screws and can go lower for bulk orders or special cases. Let's discuss your needs!
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3. Q: How long does it take to deliver my order?
A: Standard orders ship within 15-25 days, depending on complexity. Urgent orders? Contact us for expedited production .
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4. Q: What surface treatments do you provide?
A:We offer Dacromet, Galvanizing, Phosphating, Black Oxide, Powder Coating, and more. Need something special? Just ask-we're flexible!
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5. Q: Can you use rare or special materials?
A:Absolutely! We work with 304/316 stainless steel, carbon steel, brass, aluminum, titanium, and niche alloys. Specify your requirements-we've got you covered.
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6. Q: Are your screws compliant with international standards?
A:Yes! We manufacture to GB, ANSI, DIN, JIS, BSW, and other global standards.
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7. Q: How do you ensure product quality?
A:Our Taiwan-trained engineers oversee production, and every batch undergoes 100% QC checks for dimensional accuracy, torque resistance, and corrosion resistance. We also provide free samples for testing.
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8. Q: Why should I choose your company?
A: Here's why 80% of our clients reorder:
*Ultra-low MOQ for startups and small businesses
*Fast delivery (Taiwanese tech + efficient workflows)
*Zero hidden costs(transparent pricing)
*98% customer satisfaction rate
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9. Q: Do you provide after-sales support?
A: Definitely! Our team is available 24/7 to resolve issues.
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10. Q: How do I place an order?
A: Simple! Just:
1. Share your design/specs via email or leave us message .
2. Confirm pricing and MOQ
3. Pay a 30% deposit
4. Sit back and receive your screws on time!
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