Micro screw M2

a) It is a standard that defines the specifications for cross recessed raised cheese head screws (Pan Head). These screws have a raised cylindrical head with a flat bearing surface and a cross recess, often referred to as a Phillips drive (Type H). Some other common types are cross recess type Z (Pozi) and Generic hexalobular socket / 6 lobe. 

a) DIN 965 specifies the standard for countersunk head screws with a cross recess drive (commonly known as a Phillips drive). These screws are designed to sit flush with the material’s surface when installed, ensuring a smooth and clean appearance.

b) The cross-recessed drives, such as Phillips and Pozi, are widely used for their ease of installation and removal with compatible screwdrivers. Additionally, the hexalobular socket (6-lobe) design is commonly employed to provide improved torque transfer and minimize the risk of cam-out during fastening.

a) DIN 933 refers to a standard for hexagon head bolts with full threads. These bolts are commonly used in mechanical and structural applications that require high strength and reliable fastening.

b) Typically made from carbon steel, stainless steel, or alloy steel. They are available with various surface finishes, such as zinc plating, hot-dip galvanizing, or black oxide, to improve corrosion resistance and enhance durability.

Serretions under head / Extremely short length

Extremely low head

Nylok blue patch