Product Description: Hexagon thin nut is used in conjunction with bolts and screws to connect fastening machine parts. Hexagon thin nut are generally used as reinforcement when using double nuts, and are designed to prevent loosening of the nuts. The type 1 hexagon nut is the most widely used, and the Grade C nut is used for the machine, equipment or structure which is rough on the surface and is not high in accuracy. Grade A and Grade B nut are used for the surface to be smooth and require high precision for machines, equipment or structures. The thickness of the type 2 hexagon nut is thicker, and it is often used in the occasion of needing to be disassembled. The thickness of the hexagonal thin nut is thinner and is used for the restricted surface area of the connected machine.