Din985 Serrated Nylon Insert Hex Lock Nut Grade 8

Made of high-quality carbon steel/alloy steel, and undergoes precise heat treatment process (some products offer optional quenching treatment), meeting the 8-level mechanical performance standards

The guaranteed load is higher than that of ordinary 4.8-grade products. It is suitable for applications in automobiles, construction machinery, heavy equipment, etc. where higher tightening strength is required.

It is recommended to use bolts of grade 8.8 or higher to ensure that the performance of the connection pair is compatible.

Compared to the standard hexagonal nut (DIN934), the DIN985 nut is thinner in height and is suitable for installation in spaces with limited space.

The dimensions strictly follow the DIN 985 standard, ensuring good interchangeability and being able to fully replace imported brands.

Made of high-quality nylon 66 material that is resistant to oil, solvents, and low temperatures, with a working temperature range of -50°C to +120°C.

Anti-loosening principle: The nylon ring undergoes elastic deformation when the bolt is inserted, creating a constant and powerful radial clamping force, rather than relying on friction.

Reusability: Even after multiple disassemblies and reassemblies, the nylon ring can still maintain excellent locking performance (it is recommended to avoid more than 5 disassemblies to ensure the best effect)

The threads are formed through cold heading process, with full and smooth thread profiles and no burrs.

The thread accuracy meets the 6H tolerance requirements. The gauge thread passes through, the stop gauge stops, and the fit is smooth without any sticking.

The coating is uniform and does not affect the accuracy of the thread fit.

Blue-white zinc surface treatment, with uniform and bright appearance. Salt spray test can last for over 48 hours.

Various treatment options such as yellow zinc, black zinc, and Dacromet are available to meet different corrosion prevention requirements.

nylon insert lock nuts.