Hex socket countersunk screw according to ISO 10642 / DIN 7991 in steel grade 10.9, plain (uncoated) surface. The plain finish makes it suitable for dry or controlled environments and applications where post-coating or surface treatment will be performed. Provides high tensile strength and a flush fit for compact, reliable assemblies. No risk of hydrogen embrittlement, as no electroplating is applied. Available in multiple sizes from SWEBOLT & BOTNIA BOLT.