All knurled screws are one-piece manufactured. Contrary to the Official Standard Sheet, they all have a thread up to the head, but no recess at the thread end.
Material
Steel, blackened, quality 5.8
Stainless steel 1.4305, dull blasted
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.