Riegel-Kontermutter/ Hard-Lock-Nut

Beispiel

 10.001 Hard-Lock-Nuts 

Standard Dimmensions :
http://www.hardlock.co.jp/en/hl/06_2.php

When considering the cost of self-locking nuts, it is meaningless to make comparisons based on the cost price alone. Unlike conventional nuts, Hard Lock nuts are maintenance-free, so post-installation costs such as holding-power inspections and the expense of dealing with complaints or carrying out servicing if the nuts become loose are totally eliminated. When these factors are taken into account, the huge advantage of using Hard Lock nuts in terms of overall economy is clear.