Production
We manage our entire 11-step production chain, from raw material preparation to packaging, in our own facility.
Step 01
Superior fasteners start with the right raw material preparation. With our in-house controlled-atmosphere annealing furnaces and fully automatic phosphating lines, we optimise the internal stresses of wire rod coils and give them excellent formability. Our advanced surface treatments minimise friction and die wear, giving the cold forging process a flawless start.
Step 02
On our high-speed, multi-stage wire drawing lines we bring the raw material to precise diameter tolerances in the micron range. Our precision diameter control systems guarantee homogeneous mechanical strength and a smooth surface finish along the entire coil. The ideal raw material geometry required by our cold forging presses is secured by our in-house wire drawing capability.
Step 03
With our modern fleet of high-tonnage, multi-station transfer presses we form hundreds of parts per minute at high speed without removing material. By preserving the natural grain flow of the material, we achieve superior mechanical strength and fatigue resistance in bolts, screws, rivets and special fasteners. We turn even the most complex automotive geometries into series production with tight tolerances and a zero-defect approach.
Step 04
On our flat-die and cylindrical-die thread rolling machines we form threads by chipless cold rolling. This creates uninterrupted grain flow at the thread roots, delivering maximum dynamic strength against fracture and loosening. With precise surface finish and flawless thread pitches, we meet the most demanding torque requirements of global assembly lines.
Step 05
With our integrated washer assembly units we permanently join spring, serrated and flat washers to bolts before thread rolling. Our fully automatic, sensor-controlled SEMS lines completely eliminate the risk of missing washers during assembly. We offer smart solutions that save labour and increase speed on the assembly lines of our automotive and industrial OEM customers.
Step 06
With our multi-axis CNC turning, milling and sliding-head lathe fleet we flawlessly complete precise details that cannot be achieved by cold forging. Close-tolerance shoulders, cross holes and special geometries are machined with high repeatability and micron-level precision. Thanks to our flexible production capability, we deliver outstanding accuracy in both high-volume series work and special engineering parts.
Step 07
With our automatic barrel zinc, zinc-nickel and zinc flake coating lines we protect our products against the harshest environmental conditions. Our environmentally friendly passivation and controlled baking processes provide 1000+ hours of salt spray corrosion resistance and protection against hydrogen embrittlement. We offer coating solutions with precise torque-tension and friction coefficient control, fully compliant with automotive specifications.
Step 08
In line with our zero-defect (0 PPM) vision, we scan our parts with high-speed optical cameras on 360° rotating glass tables and laser measuring sensors. Dimensional deviations, form defects, thread faults and cracks are sorted out within milliseconds, independent of human judgement. We guarantee that only 100% verified, flawless fasteners are shipped to global automotive lines.
Step 09
In our laboratory, equipped with a spectrometer, tensile testing, micro/macro hardness, torque-tension and metallography equipment, we carry out complete analysis from raw material to finished product. We document every parameter — from chemical composition to microstructure grain boundaries and coating thickness — according to international standards. With our strong laboratory infrastructure, we provide scientific assurance for our customers' most critical technical specifications.
Step 10
We place the IATF 16949 and VDA quality management standards at the centre of all our production processes. From first-off approval to periodic line audits and statistical process control (SPC), we operate strict quality gates at every stage. With batch traceability from raw material to finished product, we deliver consistent and reliable quality with every shipment.
Step 11
At our automatic counting and packaging stations we prepare your products for shipment with error-free, protective packaging standards. We complete orders in full with customer- and industry-specific barcoding, labelling, boxing and palletising solutions. With strong supply chain management, we provide just-in-time and secure delivery to our global automotive and industrial customers.
