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DIN and standard parts

Nuts without locking function

Versatile: Our nuts provide the right solution for a wide variety of applications.

Nuts without locking function – DIN 934.

Nuts – the counterpart to screws in a screw connection

Screw-nut connections are a detachable joining method. Depending on accessibility or installation technique, the nut can be locked in place as it is screwed on or tightened using a tool. The connection can be released by turning in the opposite direction.

Method and principle

Overview of nuts without locking function

Working principle

The inner thread of the nut generates a positive and friction-locking connection when it is tightened.


The nuts come in different materials. In addition to steel in many different strengths, these include A2 and A4 stainless steel, plastic and brass.


Our products can be coated with different surface finishes – depending on requirements and application. We will be pleased to give you individual advice on the right coating system.

We offer the following surfaces as standard:

  • Plain
  • Galvanized
  • Thick-layer passivated
  • Zinc-nickel
  • Zinc flake

Find the right solution for your application

Types of nuts without locking function

  • Long nuts

    Thanks to their long housing, long nuts can be used to connect different components such as threaded rods.


    • B 50400
  • Round nuts

    Round nuts are used to screw together shaft-hub connections on an axis. To do this, they are screwed onto the shaft with a special tool (a C spanner or round nut spanner) in order to fix the hub in place. Loss caused by loosening of the round nuts can be counteracted using lock washers.


    • DIN 1804
  • Pipe nuts

    Pipe nuts are hexagon nuts that are chamfered one side only. Their name comes from the fact that they are often screwed onto threads on metal pipes. Due to their low overall height, a reduced load-bearing capacity can be assumed. Pipe nuts are therefore generally used in screw connections that are not highly pre-tensioned.


    • DIN 431
  • Washer nuts

    Washer nuts are a symbiosis of nut and washer. The enlarged outer diameter reduces the surface pressure and can also reduce the number of parts.


    • B 53010
  • Hexagon cap nuts

    Cap nuts have a closed end where they end in a “cap” or in a blind hole thread on the inside. This protects the screw connection on both sides from dirt and water. In addition to aesthetic aspects, cap nuts prevent sharp-edged protrusions of threads and therefore contribute to occupational safety.


    • DIN 917
    • DIN 1587
  • Hexagon coupling nuts

    Hexagon coupling nuts are similar to other long nuts in their function, in that they can act as a link between two stud bolts. Their shape also allows the nut itself to be unscrewed so they can also be used for rigid connections.


    • B 6334
  • Hexagon nuts

    Hexagon nuts are screwed onto a thread to create a screw connection. The hexagon enables the nut to be installed with an open-end wrench even in hard-to-access areas. Variable actuation is possible. Their practical shape and ease of use make them one of the most popular fasteners.


    • DIN 439 similar to ISO 4035
    • DIN 934 similar to ISO 4032
    • DIN 936
    • ISO 4032 similar to DIN 934
    • DIN 6330
    • DIN 6331
    • DIN 6923 similar to EN 1661
  • Square nuts

    Square nuts are identical to hexagon nuts in terms of their functionality, with the exception that the force contact point is different. The square shape allows them to be screwed in by hand or used as an insert nut, as their geometry can be incorporated into components much more easily.


    • DIN 557
    • DIN 562

Information and more


Interested in the nuts we offer? Please download further information here.