SAPER LOCK® screw locking nuts


SAPER LOCK® – the innovative screw lock

The clamping nut locks now found widespread in the market function based on the principle of a permanent, strong friction that, depending on the application, leads to a more or less rapid loss of preload in the connection and consequently to a successive loosening of the joint.

The SAPER LOCK® is based on a completely new principle that constantly secures the screw connection – a whole life long!

Böllhoff parabola


The new principle

The SAPER LOCK® screw lock consists of a nut with an internally placed flanged locking spring. If automatically loosened, the spring entwines itself around the stud bolt and reliably prevents the screw connection from loosening.

Areas of application

In contrast to other methods of screw locking, the SAPER LOCK® nut can be used as complete anti-rotation locks, as locking devices and as adjusting and setting elements. This is regardless of the preload force and the hardness of the components being screwed together. It can be used everywhere where high demands are made on the screw locking and where ease of use and reuse without loss in performance are required as an economic advantage.

As a screw lock expert, Böllhoff advises customers at technical seminars, trade fairs and in direct communication with the customer, and supports them in their choice of the best technical and optimal economic solution.


© Böllhoff Group, Bielefeld 2017

Reprint authorised.


Please send sample copy to

Böllhoff Group
Corporate Marketing
Anja Felsch
Archimedesstr. 1-4
33649 Bielefeld


For jounalists: related downloads.

If you would like to write about us, just download the press release and press photos.

What? File format / characters Release date Type / Size Download
Press text
.doc / 1,359 characters* July 2017 15 kB / ZIP
.doc / 1,359 characters* July 2017 15 kb / ZIP
Press text
(short version)
877 characters* July 2017 15 kB / ZIP
877 characters* July 2017 15 kb / ZIP
Photo (1)
.jpg / CMYK / 300 dpi July 2017 1788 kB / ZIP
.jpg / CMYK / 300 dpi July 2017 1788 kb / ZIP
Photo (2)
.jpg / CMYK / 300 dpi July 2017 1654 kB / ZIP
.jpg / CMYK / 300 dpi July 2017 1654 kb / ZIP

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