Flat screw electrical screws stainless steel cheese head screw

Flat screw is also known as cheese head screw. The head disc with cylindrical outer edge, height approximately half the head diameter. Cheese head can be changed to wafer head. For more information on other head types, please click here Ever Hardware provides custom made flat screw 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. Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents further surface corrosion by blocking oxygen diffusion to the steel surface and blocks corrosion from spreading into the metal’s internal structure. Passivation occurs only if the proportion of chromium is high enough and oxygen is present.

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 creation of an outer layer of shield material that is applied as a microcoating, created by chemical reaction with the base material, or allowed to build from spontaneous oxidation in the air.

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Category Flat screw
Finish Passivation
Thread type Tapping thread
Material Steel or stainless steel
Brand Ever Hardware
Place of origin China Mainland
Size option M1.0 to M30
Color Natural

Flat screw electrical screws stainless steel cheese head screw Ever Hardware Industrial Limited Ever Hardware Industrial Limited