#14X22MM ZAP STITCHING SCREW HWH + SEAL CLASS 2

Box of 200

Class 2

Screws are made from heat treated carbon steel, the screws are heat treated to give added strength. They are then electro plated with a clear or yellow zinc for better corrosion protection. This coating is not normally thick on cheaper methods of coating

5 -8 microns for Class 1 ( Z head marking )

12-14microns for Class 2 ( Z2 head marking)

The zinc coating is vulnerable in marine and industrial environments