Unifix A2-70 Socket Head Cap Screws - M8 X 25 - Silver - Box Of 20

A2-70 refers to the grade of stainless steel. 'A2' indicates the material is Austenitic stainless steel (similar to 304 grade), and '70' signifies a minimum tensile strength of 700 N/mm².

A2 (304 grade) stainless steel is generally non-magnetic in its annealed state, but can become slightly magnetic after cold working, such as during the manufacturing process of the screws.

DIN 912 is a German standard for socket head cap screws, while ISO 4762 is the equivalent international standard. They are largely interchangeable in terms of dimensions and specifications.

Yes, the A2-70 stainless steel construction provides excellent resistance to corrosion, making them suitable for outdoor applications.

You will need a standard M8 Allen key, which is typically 6mm in size.

This product is sold in a box of 20 screws.

Verify that the receiving hole is correctly tapped with an M8 thread. Ensure no debris is present in the threads. Check that you are using the correct screw (M8 x 25).

Ensure you are using the correct size Allen key (typically 6mm for M8). Check if the socket head is damaged or excessively worn. If worn, the screw may need replacement.

Use a torque wrench to apply the correct amount of force. Do not overtighten. Ensure the Allen key is fully seated in the socket head before turning.