Axle holder

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An axle holder is a machine element for securing bolt connections against unintentional loosening of the bolt.

The axle holder consists of a rectangular sheet metal strip screwed with two fastening screws , which engages in a groove pierced all around the bolt . If the bolt is also to be secured against twisting, a tangential groove is milled into it .

Axle holders are usually used on bolt connections with a diameter of more than 18 mm. They are standardized in six stages up to a bolt diameter of 250 mm in DIN 15058 .

To bolt connections with a smaller diameter are usually retaining rings used.


  • Dieter Muhs: Roloff - Matek machine elements. 18th edition, Viewegs Fachbücher der Technik, Wiesbaden 2007, ISBN 978-3-8348-0262-0 .
  • Karl-Heinrich Grote, Jörg Feldhusen (Hrsg.): DUBBEL - paperback for mechanical engineering. 24th, updated and expanded edition. Springer, Berlin / Heidelberg 2014, ISBN 978-3-642-38890-3 .

Individual evidence

  1. [1] , overview of the offers of the company mbo Oßwald GmbH & Co KG

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