Stainless Steel Flat Head Self Drilling Screw
Our Stainless Steel Flat Head Self Drilling Screw come with a countersunk Phillips drive, a sharp self-drilling tip, and a polished natural finish. Made from high-quality 304 stainless steel, they meet industry standards like GB/T 15856.1, and are ideal for a wide range of industrial and construction applications.
performance parameters
|
Parameter |
Details |
|
Material |
304 Stainless Steel (Austenitic Stainless Steel) |
|
Head Type |
Countersunk Flat Head (Csk Head) |
|
Drive Type |
Phillips Cross Drive |
|
Thread Type |
Self-Tapping ST Thread, Right-Handed |
|
Drill Point |
Heat-Treated Self-Drilling Point, Spiral Chip Removal Flutes |
|
Standard Specs (Diameter × Length) |
8 × 12mm (custom sizes available: 6–14mm diameter, 12–50mm length) |
|
Drill Point Hardness |
HRC 50–55 |
|
Surface Finish |
Natural Stainless Steel Polished |
|
Corrosion Resistance |
≥ 1000 hours in neutral salt spray test (no visible rust) |
|
Applicable Base Materials |
Carbon steel plate (≤1.5mm), aluminum alloy profiles, galvanized steel sheets, thin metal panels |
Product Features
Countersunk Design
Once fastened, the screw head sits perfectly flush with the surface, with a gap of ≤0.1mm. This prevents snagging and keeps the surface smooth and clean, making them perfect for projects like roofing, wall cladding, and equipment cabinets that require a sleek finish.
Self-Drilling Tip
The spiral chip-clearing flutes quickly clear debris, allowing drilling, tapping, and fastening to be done in a single step. Unlike traditional screws, no pre-drilling is required-our tests show this can reduce labor time by more than 40% per workstation.
304 Stainless Steel Material
These screws are crafted from 304 stainless steel, offering excellent oxidation and wear resistance, along with strong toughness. The breakage rate during fastening is less than 0.1%, far lower than standard carbon steel screws. In humid or outdoor environments, these screws last 3 to 5 times longer than carbon steel alternatives.
Core Advantages
Efficient Installation
No need for pre-drilling, nuts, or washers-just a power tool and one worker is all it takes. With 1.0mm color-coated steel sheets and light-gauge steel framing, each worker's daily output can increase by up to 50%.
Broad Compatibility
Available in sizes from ST2.9 to ST6.3, with custom lengths ranging from 12mm to 50mm. These screws are perfect for metal roofing, appliance casings, equipment panels, and automotive parts, helping reduce inventory costs while covering a wide range of needs.
Low Maintenance Costs
Made from 304 stainless steel, the screws are resistant to salt spray for up to 1000 hours or more, making them highly stable even in coastal, high-humidity, and mildly acidic or alkaline environments. Based on engineering data, they won't need replacing for 3 to 5 years, significantly lowering long-term maintenance costs.
Applications
Construction Industry
Ideal for fastening light-gauge steel framing, metal roofing, and color-coated steel sheets. The countersunk head ensures walls and roofs stay smooth and aesthetically appealing.
Appliance Manufacturing
Widely used to assemble metal casings and secure internal parts of home appliances like refrigerators, air conditioners, washing machines, and more.
Industrial Equipment
Perfect for securing thin metal parts and enclosures in industrial machinery and devices.
Other Applications
These screws are also used in automotive assembly, outdoor furniture manufacturing, and electronic device enclosures, making them a versatile fastener for various industries.
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