1. Material Composition The “1% 201% 4%” typically indicates a specific ratio of metals used in the alloy, such as stainless steel or another corrosion-resistant material, which enhances durability. Stainless steel screws resist rust and corrosion, making them ideal for settings exposed to moisture or chemicals.

4. Corrosion Resistance Many wafer head reamer self-drilling screws are available with protective coatings, such as zinc plating or galvanized finishes. These coatings increase resistance to rust and corrosion, extending the lifespan of the fastening solution.

2. Machinery Anchoring In industrial settings, M20 bolts are used to secure heavy machinery to concrete bases, ensuring stability during operation and minimizing vibration-related issues.

The versatility of white hex head self-drilling screws makes them suitable for a range of applications, including

2. Improved Aesthetics The countersunk head design provides a neat appearance, especially in visible or decorative applications. This feature is vital for projects where aesthetics are as crucial as functionality.

The addition of washers to hex head self-tapping screws is another feature that enhances their performance. Washers are flat discs, usually made of metal or plastic, placed under the head of the screw. They serve several important purposes