The M3X25/ISO7380-1-A2 is a metric machine screw made from stainless steel, with a small countersunk head and a metric thread pitch. The head is 25 mm in diameter, with a flat underhead bearing surface and external drive (Phillips) recess. The thread is 3 mm in diameter and has a 25 mm length, with a pitch of 0.5 mm (ISO standard). The screw has an ISO 7380-1-A2 designation, which is a designation of a standard "nominal size" for a type of fastener. It is a type A2 grade steel, which is an Austenitic grade stainless steel designed to resist corrosion, with suitable hardness and tensile. This type of screw is typically used in humid areas, such as bathrooms, kitchens or swimming pools, or in medical environments. It is the most widely used grade of stainless steel fastener and is ideal for applications that require maximum corrosion resistance.