The company mbo Osswald has bolts that come with or without a thread, with or without a pinhole, with one, two or more turned grooves and bolts with or without a head. It can be made of steel or stainless steel from the stock and comes in all sizes. The standardized DIN components are available in different sizes.
It has DIN 1433 to DIN 1445 up to DIN EN 22338 and even up to DIN EN 22341. It has diameter between 4mm up to 60mm and lengths measuring 20mm and 200mm. At mbo, DIN bolts used can't be found in any official standard lists.
This can even include customer samples and sketches. Mbo has been producing bolts for the past 40 years.