Nuts are internally threaded fasteners that are used with bolts and threaded rods and studs to connect components. Several different nut styles fit a variety of application and installation requirements. Some styles, such as hex nuts, acorn nuts, flange nuts, and coupling nuts, must be tightened with a tool. Others, such as eye nuts, thumb nuts, and wing nuts, can be tightened by hand. Some nuts have a self-locking mechanism, such as a nylon patch or distorted threads, that makes them suitable for applications with a high amount of vibration.
Hex nut tightens from the side with a wrench, enabling use when there is limited space above the nut
Class 10 steel is often used in applications where strength is the primary consideration
Plain surface has no finish or coating
Meets DIN 934 specifications