Stainless Steel Sheet Metal Screws Metric Self Tapping Screws

Stainless steel sheet metal screws are the screws with pan head and slotted Phillips drive and metal tapping threaded. The screws are mostly with passivation finishing. Ever Hardware provides custom-made fasteners and customizable packaging.

Stainless steel does not readily corrode, rust or stain with water as ordinary steel does. However, it is not fully stain-proof in low-oxygen, high-salinity, or poor air-circulation environments. There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and corrosion resistance are required.
Stainless steel differs from carbon steel by the amount of chromium present. Unprotected carbon steel rusts readily when exposed to air and moisture. This iron oxide film (the rust) is active and accelerates corrosion by forming more iron oxide; and, because of the greater volume of the iron oxide, this tends to flake and fall away.

Passivation, in physical chemistry and engineering, refers to a material becoming “passive,” that is, less affected or corroded by the environment of future use. Passivation involves the creation of an outer layer of shield material that is applied as a micro coating, created by chemical reaction with the base material or allowed to build from spontaneous oxidation in the air. As a technique, passivation is the use of a light coat of protective material, such as metal oxide, to create a shell against corrosion. Passivation can occur only in certain conditions and is used in microelectronics to enhance silicon.