Hexagon nuts are used in conjunction with bolts and screws to connect and tighten parts. Among them, the Type 1 hexagon nut is the most widely used, and the C-grade nut is used for machines, equipment or structures with rough surface and low precision requirements; A-grade and B-grade nuts are used for relatively smooth surfaces and high precision requirements. on machinery, equipment or structures. The thickness m of type 2 hexagon nut is thicker, and it is mostly used in occasions where assembly and disassembly are often required. The thickness m of the hexagonal thin nut is relatively thin, and it is mostly used when the surface space of the connected parts is limited.

Material: 40Cr, 45 steel, 35K, stainless steel, Q235 (A3 steel), etc.

Hardness grade: 4, 5, 6, 8, 10, 12