DIN 6921 · ISO 4162
Flange bolts
Hex heads with a built-in washer face that spreads the clamping load, so no separate washer is needed.
Knurled shank · OEM drawing
Wheel studs
Studs pressed into hubs and brake drums. The knurl locks them in place; the rolled thread carries the wheel nut.
Projection weld · round head
Weld bolts and studs
Projections under the head melt during resistance welding and fix the bolt firmly to sheet metal.
Press-fit · anti-rotation
Ribbed-neck bolts
A ribbed neck bites into the panel when the bolt is pressed in, so it cannot turn while the nut is tightened.
ISO 4762 · ISO 7380 · special
Socket and special heads
Socket, button, flange and Phillips heads in standard and special lengths.
Your drawing or sample
Pins and custom parts
Pins and special cold-formed parts, designed with our engineering team and made only for you.
Manufacturing range
What we can make for you
If your part falls inside this range, we can forge it. Send the drawing and our engineers will confirm the details.
Property classes and coatings explained- Thread sizes
- M4, M5, M6, M8, M10 and M12
- Property classes
- All classes: 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9
- Wire
- All grades of carbon and alloy steel wire
- Standards
- DIN, ISO or your own drawing
- Finishes
- All finishes, including zinc, zinc-nickel, zinc flake and phosphate
- Head marking
- S.P.A mark, or your own mark as your OEM supplier
- Capacity
- 3 million bolts and pins a month
- Certification
- IATF 16949 and ISO 9001