1. What is this?
These 410 stainless steel self drilling screws are precision-engineered, offering both corrosion resistance and a polished finish. Designed for applications, they feature a round phillips head for maximum torque control and a self-tapping drill tip that cuts through metal, wood, and plastic without pre-drilling.

2. What will I get?
Thick Pan Head Cap Self Screws Total size: 18x7.9mm/0.71x0.31 Inch(LxD);
Screws: 16x4.2mm;
Specification: M4.2x16mm;
Color: White, Silver;
Material: 410 stainless steel;
Package Included: 60Pcs x self-tapping screws.

3. Are there any advantages of the product?
1. Ultimate Durability: 410 stainless steel core + baked polyester coating resists rust and harsh weather (perfect for outdoor projects).
2. Time-Saving Design: Self-drilling tip eliminate the need for holes—attach materials in seconds with a standard phillips driver or drill.
3. Secure Fit: Flat head sits flush with surfaces;
4. Multi-Purpose Use: Works seamlessly on metal sheets, wooden frames, and composite materials.

4. How to use it?
1. Position the screw perpendicular to the workpiece.
2. Drive with a phillips tool at medium speed until the head is flush. Avoid over-tightening to prevent stripping.

What should I notice?
1. Not recommended for concrete or hardened steel surfaces.
2. Store in a cool, dry place to maintain coating quality.
3. Wear work gloves to prevent fingerprints on the finish during handling.