Ring Nut for Covers

The DIN 28129 ring nut for covers is designed for use in the manufacture of containers, vessels and tanks of various sizes and capacities, for opening inspection windows and hatches. In shape and function it is similar to standard eye nuts, but the material from which this fastener is made is not intended for increased tensile loads or intensive operating conditions.

The nut is manufactured in accordance with the German standard DIN 28129. A distinctive feature of the product is a convenient handle that allows it to be tightened by hand without wrenches or other special tools. The nut’s thread is cut on the inner surface of the sleeve. Its height fully matches the dimensions of standard nuts. Thread diameter is M12-M30.

Ring nuts are rarely subjected to increased loads, so they are made of mild steel or carbon steel. Where exposure to a more aggressive environment is expected (moisture, humidity, elevated or reduced temperatures), it is recommended to use DIN 28129 nuts made of coated steel (zinc-plated).