Create their own threads when driven into material
Zinc Plated Steel fasteners are suitable where strength and corrosion resistance are primary considerations
Pan head allows for higher tightening torques
Phillips drive is designed to cam out under too much torque
Imported from USA
Self Tapping Screws are designed to advance when turned, creating their own threads in the material. They are often
used in sheet metal and plastic.
Steels are designated by a 4 number SAE Steel grade. The first two digits indicate the primary materials used to form
the steel. The last 2 digits identify the percentage of carbon for the alloy (in hundredths). The steel used in these
fasteners has a tensile strength ranging from 100,000 to 150,000 psi (pounds per square inch). Zinc Plating helps to
Pan head fasteners have a low, large cylindrical head with a high rounded top edge for higher tightening torques - these
fasteners are often recommended to replace older head styles such as round, binding, or truss-head where possible. The
Phillips drive style was originally designed so that the driver would slip out under extreme torque, preventing
over-tightening and damage to the fastener or the material.