Unifix Socket Button Head Screws - Grey

A2 refers to the stainless steel grade (304), and 70 indicates the tensile strength class, signifying it is cold-worked stainless steel.

Yes, their A2-70 stainless steel composition provides excellent resistance to corrosion in most standard outdoor environments.

No, these are designed specifically for use with a hex key (Allen wrench) to ensure proper torque application.

Yes, provided the threads are not damaged and the hex socket remains in good condition, they can typically be reused.

It is an international standard that defines the dimensions, properties, and tolerances for button head screws with hex sockets.

Yes, this specific package contains 500 units, making it ideal for high-volume requirements.

Ensure the hex key is fully inserted into the socket and matches the exact size; stop if resistance becomes excessive.

Verify the thread pitch matches the tapped hole and ensure the hole is clear of debris or metal shavings.

While A2-70 is corrosion resistant, clean the surface with a non-abrasive stainless steel cleaner and avoid contact with carbon steel tools which can transfer iron particles.