Hex screw, with cylinder head, which is very suitable for miniature application, but also for the heavier work, due to the enormous range. The hex screws are thermally blackened as standard. Meet the strictest requirements and suitable for many applications. According to DIN 912 (ISO 4762) standard.
Material:
bolt: untreated steel; stainless steel.
Characteristics:
a in the table stands for the class of the hex bolt.
