Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of phillips truss head self drilling screws carbon steel c1022a in China. Welcome to buy bulk high quality phillips truss head self drilling screws carbon steel c1022a 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)
Product Details
Our Phillips Truss Head Self-Drilling Screws are precision-engineered fasteners designed for superior performance in metal-to-metal and metal-to-wood fastening applications. Manufactured from high-grade Carbon Steel C1022A, these screws offer an optimal balance of hardness and ductility, ensuring they withstand high torque during installation without compromising structural integrity.
Material & Specifications
Material: Carbon Steel C1022A
Size:Diameter:M3/3.5/4/5/6,Length:10-100mm(Custom sizes available)
Length Range: 16mm to 70mm
Head Style: Truss Head
Drive: Phillips Drive
|
Size |
Thread Diameter |
Head Diameter |
Overall Length |
|
M3 |
3 |
6.08 |
10, 12, 14, 16, 20, 25, 30 |
|
M3.5 |
3.5 |
6.73 |
12, 14, 16, 20, 25, 30, 35, 40, 50 |
|
M4 |
4 |
7.42 |
12, 14, 16, 18, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, 100 |
|
M5 |
5 |
10 |
16, 20, 25, 30, 35, 40, 50, 55, 60, 70, 80, 90, 100 |
|
M6 |
6 |
11.4 |
40, 60, 80, 90, 100, 120 |
Processing & Customization
Each screw undergoes a thorough heat treatment process to achieve the required case hardness (HRC 52-56) on the drill point, enabling the screw to penetrate steel substrates up to 12mm thick. To guarantee corrosion resistance, we offer surface finishing options including zinc plated (clear, yellow, or black) and geometric (Dacromet) coatings.
We provide comprehensive customization services, including tailored lengths, specific coating requirements to meet stringent salt spray test standards, and private-label packaging to align with your brand identity.



Application & Market Analysis
These screws are ideal for steel framing, metal roofing, and general construction where speed and reliability are critical.
Customer Needs & Pain Points
Pain Point1: Contractors often face "burn-out" or broken tips when fastening into heavy-gauge steel, leading to downtime and material waste.
Solution: The C1022A material combined with optimized heat treatment ensures the drill point penetrates hard substrates efficiently without fracturing, significantly reducing installation failure rates.
Pain Point2: Traditional hex heads often cam out or strip in tight spaces, and small heads can pull through thin sheet metal.
Solution: The Phillips Truss Head provides a broad bearing surface that distributes clamping pressure evenly, preventing pull-through in soft metals or plastics. The Phillips drive offers reliable bit engagement for consistent seating.
Pain Point3: Corrosion in outdoor or humid environments leads to premature fastener failure.
Solution: With customizable high-corrosion-resistant coatings, we ensure long-term durability that matches the lifecycle of the structural components.

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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