Zinc Plated Countersunk Flat Head Self-Drilling Screw Stepped Collar & Winged Tip
Brand Name:FinExpress
Certification:ISO9001|ISO14001| IATF16949
Model Number:zinc plated self-drilling screw
Minimum Order Quantity:30000
Delivery Time:7~15 Working Day
Payment Terms:T/T, L/C, D/A, D/P
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Verified Supplier
Location:
Dongguan Guangdong China
Address:
Building 2, No. 129 Xinmalian Xinma Road, Dalang Town, Dongguan, Guangdong, China
Supplier`s last login times:
within 37 hours
Product Details
Company Profile
Product Details
Zinc Plated Countersunk Flat Head Self-Drilling Screw – Stepped
Collar & Winged Tip
Product Overview
Our Zinc Plated Countersunk Flat Head Self-Drilling Screw combines speed, durability, and precision for fastening metal sheets, wood, and composite materials. Featuring a stepped collar to prevent over-drilling and a winged tip for rapid pilot hole creation, this screw eliminates the need for pre-drilling, reducing labor and tooling costs. Ideal for roofing, HVAC, and construction projects, its zinc-plated finish ensures corrosion resistance and long-term reliability in harsh environments.
Key Features
✅ Self-Drilling Winged Tip
- No Pre-Drilling Required: Winged tip drills a clean pilot hole, while the stepped collar ensures consistent depth control.
- Fast Installation: Saves time in high-volume projects like metal roofing or framing.
✅ Zinc Plated Finish
- Corrosion Resistance: Trivalent zinc coating protects against rust, humidity, and mild chemicals.
- Durable & Cost-Effective: Budget-friendly alternative to stainless steel for indoor/outdoor use.
✅ Countersunk Flat Head Design
- Flush Finish: Sits level with surfaces for a professional look and reduced snagging.
- Wide Bearing Surface: Distributes load to prevent material deformation.
✅ Stepped Collar
- Depth Control: Prevents over-penetration in thin-gauge metals or brittle substrates.
- Grip Enhancement: Improves clamp force by compressing material under the collar.
✅ Carbon Steel Construction
- Grade 4.8/8.8: Tensile strength up to 800 MPa for structural integrity.
- Reusable: Maintains thread sharpness for multiple installations.
Specification
More Detail Informations | ||
Available Material | 1.Stainless Steel: SS303, SS304, SS316, SS410, SS420; 2.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045; 3.Brass: C3602,C3604,Hpb59,Hpb62,Hpb65,Hpb58,Hpb70 ; 4.Aluminum: Al6061, Al6063 etc or as your requirements | |
Head type | CSK Head,Pan Head,Truss Head,Hexagon Head,Round Head,Oval
Head,Button Head,Cap Head,Cheese Head,etc. | |
Hardness | Carbon Steel:HRC:28~35 ,HV450~700 Alloy Steel:HRC:32~39(grade10.9) HRC:39~44(grade12.9) | |
Finish | Zinc plated, Nickel plated, Bronze, Copper,Phosphate, Oxidation
black, Passivation, Tin, Dacromet, Gold, Chrome, Silver, Phosphorization,Zinc-nickel alloy plated etc. | |
Sample Available | The sample is free of charge if we have the existing tooling,you
only need to pay for the freight cost | |
Delivery time | Samples time 3-5 working days, Lead time 20-25 working days | |
Pricing Term | EXW Dongguan(FCA),FOB, CIF, CNF, DDU,etc. | |
Packing | Bulk in PE bag or Small boxes.then in carton .pallet | |
Payment term | TT (30% in advance as deposit, balance before delivery) , L/C,
Western Union,PayPal etc | |
Management system | ISO9001:2015 | |
Certificate | ISO,ROHS | |
Why Choose Us
Why Choose Us?
✅ OEM/ODM Support: Full custom packaging, branding, and documentation.
✅ Quality Assurance: ISO 9001-certified with full material traceability and testing
(salt-spray, torque, tensile).
✅ Flexible MOQs: Prototype batches to large-scale production.
✅ Fast Turnaround: 10–15 days for standard orders; expedited options available.
Company Profile
FAQ
Q1: What is your main products and material supply?
A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
Q2: When can I get the price?
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
Q3: What about the transportation and delivery date?
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
Q5: Can I get discounts?
A: Yes, for big order, frequent customers, we give reasonable discounts.
A: Yes, for big order, frequent customers, we give reasonable discounts.
Q6: Do you have enough capacity?
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
Zinc Plated Countersunk Flat Head Self-Drilling Screw Stepped Collar & Winged Tip
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