New product 2025: The right case for every standard. Our versatile range in our high-quality case series offers you threading solutions for metric, metric-fine as well as American and British applications.
GSR Gustav Stursberg
Your manufacturer for thread cutting tools from the tool town Remscheid.
The Downloads
GSR Threading Calculator App
With the new GSR Thread Calculator app, it is possible to determine core hole dimensions and roughing diameters for the most common thread types – without the hassle of looking up tables. In addition, you can have the core hole diameter calculated for thread formers and STI thread repair.
The operation is intuitive and simple. The thread calculator is available for free for iOS and Android devices.