Pan Head Thread Cutting Screws Stainless Steel Cross Screw For Plastic

Pan head thread cutting screws are most often used with wood and metal and do not generate the same stress as thread forming screws. Thread cutting screws are a class of self-tapping screws that create threads in existing holes in metal and are often used as fasteners in items that need periodic maintenance. Ever Hardware provides custom-made fasteners and customizable packaging.
Thread cutting, as compared to thread forming and rolling, is used when full thread depth is required, when the quantity is small, when the blank is not very accurate when threading up to a shoulder is required, when threading a tapered thread, or when the material is brittle. Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting. The thread-forming screw displaced material around the pilot hole so that it flows around the screw’s threads.

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.

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