Special low head screw NYLOK

a) DIN 912 (ISO 4762) refers to a standard for metric socket head cap screws, also known as cup head screws. These fasteners feature a cylindrical head with a hexagonal recess (socket) in the center, allowing them to be tightened or loosened using a hex key or Allen wrench. These screws are commonly used in various applications where a high tensile strength is required.

b) A socket head cap screw with a knurled head is a modified version of the standard DIN 912 screw, featuring a textured knurled surface around the head. This design provides additional grip for manual handling or adjustment, making it ideal for certain applications.

a) A self-tapping screw for thermoplastics is a specialized fastener designed to create its own threads as it is driven into plastic materials.

b) These screws have wider, sharp, and deep threads, which allow them to cut into the softer thermoplastic material efficiently, creating a secure, long-lasting hold.

Flat head weld stud with metric thread

a) A ribbed neck screw is a type of fastener designed with a special feature on its shank or neck. Instead of a smooth or threaded surface, the neck of the screw has ribbed, serrated, or knurled features. These ribs or serrations provide additional grip and resistance when the screw is driven into a material, preventing it from rotating or loosening.