DIN 985

DIN 985 nuts are self-locking nuts with a nylon ring, designed to prevent loosening due to vibration or movement, maintaining a secure fastening over time. Their non-metallic locking system makes them particularly useful in assemblies where controlled retightening is required or where conditions of use involve repetitive movement.

Thanks to their standardised design, these hexagonal nuts guarantee compatibility with metric screws and are widely used in machinery, industrial assemblies, automotive and metal structures.

Hex nuts with nylon ring according to DIN 985

At CHAVESBAO, we offer DIN 985 nuts manufactured in accordance with the standard, available in grade 8 steel and A2/A4 stainless steel, to suit both standard applications and environments exposed to moisture or corrosive agents.

The nylon insert acts as a mechanical brake, preventing loosening without damaging the screw thread. They are available with different finishes (zinc-plated, black, hot-dip galvanised) for greater surface resistance and durability depending on the working environment.

Their self-locking design makes them an effective solution, reusable under certain conditions, and highly valued in industrial assemblies where tightening security is prioritised without the need for additional components such as washers or chemical brakes.