This website uses cookies. You can find out more by viewing our cookie policy hereAccept & Close



Catalogue Technical Specification

CAD Data

3D CAD Model


GN3663 Torque Knurled Knob Screws

CAD Viewer Technical Data

Series Selector

CAD Viewer Technical Data

Product Description

GN3663 Torque Knurled Knob Screw

Torque knurled knob screws, GN 3663, are used when manually applied torque is to be limited.

When turned clockwise, the torque mechanical system of the knurled knob triggers an "over-engagement“ as soon as the specified torque is reached. When turning anti-clockwise, the mechanical system locks so that the torque is not limited. When tightening, this will ensure that the maximum permissible torque is not exceeded. On the other hand, the torque necessary for releasing will always be transferred easily and reliably.

After removing the cover and loosening the countersunk screw, the thread or bore insert can be dismantled.


Knob - Aluminium AL, black, anodized

Torque mechanism - Steel ST, hardened

Other parts - Steel ST, blackened

Cover cap - Plastic, light grey

On Request

Other dimensions for d4 / Length l and d3, and other torques. Torque limiting turning anti-clockwise or turning anti-clockwise and clockwise.

Related Series

Quality & Certification
Download our quality certificates & service information documentation

Guaranteed Fast Delivery
Next day delivery on all stock items Fully trackable shipping via UPS

University or DIY Project
Friendly, technical help & advice No minimum charge for small orders

Our Reviews & Feedback
Our customers are important to us Real feedback from real customers

Trade Accounts Welcome
30 day credit accounts available Easy, quick online application form

Key Cloud...
Torque knurled knobs screws GN3663 demountable threads bore limited steel plastic aluminium anodized cover thrust washers studs springs

HomeCompanyProductsContact UsYour BergerCataloguesFAQsDiscounts & Delivery ChargesBusiness Code of Practise
Follow Us
© Berger Tools Ltd 2018 Admin Website by Goldhosts
Payment Methods