Socket Screws Cap Head - M6 x 30 - Pack of 100

Grade 12.9 is a high-strength classification for steel bolts and screws, indicating superior tensile strength and performance under stress compared to lower grades like 8.8 or 10.9.

These screws have a full thread length, meaning the threads extend along the entire usable length of the screw shaft, providing maximum engagement.

The zinc plating provides moderate corrosion resistance, making them suitable for many outdoor applications. However, for extremely harsh or coastal environments, a stainless steel or coated screw might offer better long-term protection.

You will need a 5mm hex wrench or socket bit to drive these M6 socket head cap screws.

The primary differences lie in the length (30mm vs. 20mm), thread pitch, and sometimes the pack quantity. Always check the product title and description for specific dimensions and quantities.

Yes, as they are made of steel, these screws are magnetic.

The pack of 100 screws has an approximate weight of 0.78 kg.

Check that the hole is clean and free of debris. Ensure you are using the correct M6 thread size and that the hole is properly tapped. Verify the screw is not cross-threaded.

Ensure you are using a high-quality 5mm hex wrench or socket. Apply firm, consistent pressure and ensure the tool is fully seated in the socket. If the socket is damaged, the screw may need to be carefully removed with specialized tools.

This may indicate prolonged exposure to moisture or corrosive elements. Clean the affected area with a dry cloth. For continued protection in harsh environments, consider using screws with a more robust coating or applying a protective lubricant.

Re-assess the torque applied. Ensure the mating threads (in the hole or nut) are not damaged. For applications involving vibration, consider using thread-locking compounds or lock washers.