Screw manufacturer for high-volume and automated assembly
Interwolf is a specialised European manufacturer of standard and non-standard screws tailored to the requirements of a wide range of industries. We handle high-volume orders (from 100,000 pcs) with tight tolerances and optimisation for automated assembly lines.
We produce more than 500 million screws a year. Production takes place in the EU in accordance with ISO 9001, with process control and full batch traceability.
Our manufacturing strength
Our own machine park, in-house toolshop and process control – all in one place in Logatec.
- 0150+ production machines
- 02Diameters from 2 mm to 8 mm
- 03High-volume orders (from 100,000 pcs)
- 04Tolerances ±0.02 mm (depending on dimension)
- 05In-house toolshop
- 06Hardness testing after heat treatment
- 07SPC monitoring of critical dimensions
- 0875% of production for export markets
- 09Optical sorting of screws (50 ppm, on request)
- 10Packing into smaller units (bags) for service kits or specific customer needs
The screw as a functional part of the system
On automated assembly lines, the geometric stability of the screw is key to a smooth process. That is why we closely control head roundness, thread profile and tolerances – exactly what prevents stoppages on the line and keeps the tightening torque consistent.
For us, a screw is not just a mechanical element but a functional part of the system. Our approach is based on technical cooperation with the customer's development team from the early stages of a project, ensuring the long-term stability of the entire production process.
Technical challenges and solutionsA technical partner, not just a supplier
We do not simply manufacture to customer specification — we get involved in the product development phase. We analyse feasibility, advise on optimising geometry for the material and assembly method, and support documentation requirements, including PPAP where needed.
Our solutions are used by manufacturers in many industries — from furniture to electrical appliances — as part of long-term technical cooperation.
Development processFrom a single screw to a complete assembly kit
Standard screws to DIN and ISO, solutions made to customer drawings and services that simplify your assembly line.
Product range
Diameters 2–8 mm, lengths 4–80 mm, metric, self-tapping and self-drilling threads.
MoreCustom screws
Non-standard screws made to your drawing – for specific materials, assembly processes and tighter tolerances.
MoreScrews with washers
SEMS screws to DIN 6900, SN 60736 and SN 60730.
MoreOptical sorting
100% inspection on request with a target quality of up to 50 ppm.
MorePackaging & assembly kits
Automated packaging to customer specification and assembly kits.
MoreTechnical support
From idea to series production – geometry, material, SPC and validation.
MoreFor manufacturers who build screws into their own products
More than 70% of our customers build our screws into their own products.
Blog / News
From a standard screw to a functional component
Standard DIN or ISO screws cover general applications. In manufacturing projects, however, we often need custom head shapes, specific thread profiles,...
MORE
Series production and the risk of variation
Interwolf produces batches of tens of millions, where process stability is not a one-off requirement but a long-term responsibility.
MOREIndustrial positioning and the strategic role of the supplier
In modern series production, a screw is not just a mechanical element but a functional part of the system. Joint stability directly affects the reliability of the end product, assembly speed, scrap on the line and long-term warranty costs.
MORESend us your inquiry
Send us your inquiry today and we will supply high-quality screws tailored to your needs – quickly, reliably and competitively.