Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of full thread silver sds self drilling screws with hex flange head in China. Welcome to buy bulk high quality full thread silver sds self drilling screws with hex flange head 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)
Built to Cover Every Customer Tier and Order Volume
- Our self-drilling screw + EPDM composite washer system is set up to serve more than one type of buyer.
- Small trials and mixed sizes: low MOQ, flexible packing, and free samples before mass production-so a new customer can test the market without overcommitting.
- Mid-volume distributors: stable production scheduling, repeat-order planning, and wholesale pricing that reflects real factory cost-not a one-off quote.
- Large OEM and project volume: dedicated lines, in-house washer bonding, raw material stock, and capacity planning that holds lead times across peak seasons.
- Different specs, one system: panel thickness, purlin gauge, washer hardness, coating, and packing can be matched to each market tier-without changing the quality standard.
So whether you buy a trial batch or a full container program, you get the same factory system behind it: capacity you can plan around, tiered pricing that fits your volume, and one accountable service contact from sample to shipment.
Specifications
|
Parameter |
Details |
|
Material |
Carbon steel |
|
Surface Finish |
Dacromet coating (silver grey) |
|
Head Style |
Hex washer head with integrated flange |
|
Drive Type |
External hex (socket or wrench drive) |
|
Thread Type |
Coarse thread with self-drilling point |
|
Drill Point |
Drill sizes #2, #3, #4, #5 (customizable) |
|
Size Range |
Diameter: #8 – #14 (M4.2 – M6.3) / Length: 13mm – 150mm |
Surface Treatment
Salt spray resistance: Exceeds 1000 hours (ASTM B117), suitable for harsh outdoor, marine, and industrial environments.
Heat resistance: Withstands temperatures up to 300°C without degradation.
Uniform finish: Silver grey, matte appearance with excellent adhesion and no risk of white rust.
Customer Pain Points Solved
|
Pain Point |
Solution |
|
Corrosion in harsh environments |
Dacromet coating provides long-term protection – no red rust even after years of exposure to salt, moisture, or chemicals. |
|
Slow installation / pre-drilling required |
Self-drilling tip enables one-step fastening, saving up to 50% labor time. |
|
Hydrogen embrittlement risk |
Dacromet is a non-electrolytic coating, eliminating the risk of hydrogen-induced cracking in high-strength fasteners. |
|
Loose connections under vibration |
Hex washer head provides a large bearing surface and allows high torque application; serrated flange (optional) enhances locking. |
Custom Packaging (Wholesale & Retail)
We offer flexible packaging solutions to meet wholesale and retail needs:
|
Packaging Type |
Description |
|
Wholesale Bulk |
Master cartons (20–25 kg per carton) or kraft paper bags with inner liner; customizable labeling with SKU, quantity, and batch number. |
|
Small Poly Bags |
Poly bags with printed labels (barcode, size, quantity) – ideal for hardware store resale. |
|
Retail Boxes |
Custom-printed color boxes with your branding, product specifications, and installation instructions. |
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.
Factory photos
FAQ
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