Combination flat washers are used in conjunction with bolts and screws for connecting and securing machine parts. The 1-type six-way nuts are widely applied, while C-grade nuts are used on machines, equipment, or structures with rough surfaces and less precision requirements; A-grade and B-grade nuts are used on those with smoother surfaces and higher precision requirements. The 2-type combination flat washers have a thicker thickness M and are often used in situations that require frequent assembly and disassembly. Hexagonal thin nuts have a thinner thickness M and are commonly used when the surface space of the connected parts is limited.

The flat washer combination nut is used in conjunction with bolts and screws for rotational assembly, serving as a connecting and securing element. Among them, the 1-type six-way nut is applied.Please provide the Chinese content you would like translated into American English.Wide, C-grade nuts are used on machinery, equipment, or structures with rough surfaces and low precision requirements.