Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of hex flange head self drilling screws with pvc washer in China. Welcome to buy bulk high quality hex flange head self drilling screws with pvc washer made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
Drywall screws are not priced by quantity alone. Weight per piece has a direct effect on cost, especially for large orders. A small difference in screw weight can change the total tonnage and the final price.
Send us the details, drawing on my factory-floor experience, we can analyze your specific market conditions and store requirements to help you determine the most precise and appropriate pricing.e-no guesswork on weight.
Please specify:
01
- Diameter × length
- Head type (bugle head, countersunk, etc.)
02
- Thread type (fine or coarse)
- Coating (black phosphate, gray phosphate, zinc, etc.)
03
- Target weight per piece (g/pc)
- Order quantity
04
- Packaging (dimensions of the box/outer carton, package weight, and whether the logo style or color can be customized)
Why Buyers Choose Hex Head Self-Drilling Screws with PVC Washers for Color Steel Roofing
Leak protection that sells
The PVC washer compresses under the hex head and seals the fastener hole, cutting callbacks on metal roofing and cladding.
Protects the panel coating
The washer cushions metal-to-metal contact, reducing scratches and coating damage during installation.
Fast, one-pass fixing
Self-drilling point cuts through steel purlins without pre-drilling, so crews install more per day.
Consistent quality in bulk
Stable hardness, sharp drill points, and properly fitted washers mean fewer stripped heads and jammed guns on site.
Wholesale-ready supply
Mixed sizes, bulk packing, and repeatable lead times let distributors stock what sells without overcommitting.
Better margin than premium washers
PVC gives reliable sealing at a lower cost than EPDM, making it easier to hit competitive wholesale price points for standard roofing jobs.
Key Features & Benefits
|
Feature |
Benefit |
|
Self-drilling point |
Eliminates pre-drilling, speeds up installation |
|
Hex flange head |
Provides high torque transmission and broad bearing surface |
|
PVC washer |
Creates weather-resistant seal, prevents corrosion at the clamping interface |
|
Wide size range |
Diameters 4.2–6.3mm, lengths 16–200mm suit diverse applications |
|
High-strength carbon steel with zinc |
Ensures reliable holding power and durability |
Application Scenarios
These screws are widely used in:
Metal roofing and cladding – fastening steel sheets to steel or wood substructures
Steel structure construction – connecting light gauge steel framing
HVAC ductwork – securing components with weatherproof sealing
General industrial assembly – where speed and sealing are critical
The combination of self-drilling capability, flange head design, and PVC washer makes this screw particularly suitable for outdoor and moisture-prone environments, ensuring long-term joint integrity.
Factory Strength & Global Clients
Our manufacturing facility spans 12,000 square meters and operates 8 high-speed cold heading production lines, 6 automatic thread rolling machines, and 4 advanced heat treatment lines, supported by a dedicated in-house laboratory for material and coating testing. With an annual output exceeding 8,000 tons, we maintain consistent inventory and short lead times.
We proudly serve clients across Europe, North America, Southeast Asia, and the Middle East. Our customers include:
A top 5 hardware distributor in Germany, supplying over 500 SKUs under private label
A leading furniture manufacturer in Vietnam, with monthly orders exceeding 100 tons
Multiple automotive component suppliers in Japan and South Korea, sourcing custom specifications
Customization & Service
We support custom sizes, surface finishes, and packaging options to meet specific customer requirements. Whether for wholesale bulk packaging or retail-ready small packs, we tailor our solutions to your distribution needs.
Custom Packaging&Private Label Available
Choose from bulk cartons, poly bags with branded labels, or retail-ready packaging. Minimum order quantities can be adjusted to support both small contractors and large-scale procurement needs.
We offer custom box/bags printing and labeling services to help you build your own product line.
FAQ
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