DIN 985 nut, stainless steel A2, A4

DIN 985 stainless nut

The DIN 985 stainless nut has the most common hexagonal shape. Its distinctive feature is a polymer ring located in the hole of the part. It is designed to prevent spontaneous thread departure due to the friction force, i.e. it performs the function of a stopper. Therefore, nuts of this type are self-locking. When tightening the nut on the polymer tab, the thread is forcibly cut, which is an additional locking factor. The tab also plays the role of a vibration damping damper, so the DIN 985 steel nut does not require the installation of a washer during installation. In addition, the polymer ring enhances the tightness of the connection. This type of fastener is used in equipment operated under dynamic loads, and ensures the strength and reliability of the connection.

Our company offers DIN 985 nuts in A2 and A4 versions. The A2 version (food grade stainless steel) has excellent mechanical and thermal strength: products made of this steel can operate in the temperature range -200°C - +450°C under conditions of significant mechanical loads. A2 nuts have good anticorrosive properties, can be operated outdoors, at high humidity, as well as in low- and medium-aggressive acid solutions. A2 steel has high hygienic properties, which allows the products to be used in technological processes in the food, pharmaceutical and chemical industries. The A4 version is characterized by increased anticorrosive and antimagnetic properties. Fasteners made of this steel are used in the installation of equipment operating in solutions of acids and alkalis, in chlorine-containing media, in seawater. It is widely used in shipbuilding, aviation, mining, chemical, petrochemical and other industries, in the construction of structures operating in aggressive environments.