M4x40 Hex Head Set Screw Zinc Plated

• These set screws are made from grade 8.8 steel.
• They are fully threaded and conform to DIN 933 standards.
• Zinc plated for increased resistance to corrosion.
• Can be used with many nut types and washers.

APPLICATION:

For fastening together numerous types of material or to be fastened in to pre-tapped holes.

Widely used in many engineering applications.

Zinc coatings prevent oxidation of the protected metal to create a longer lasting finish. It does this by forming a barrier and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not trigger a breakdown of the substrates surface integrity as it is formed. The zinc oxide, if left intact, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminum and stainless steels by their oxide layers.