Hex socket cap screw according to ISO 4762 / DIN 912, strength class 10.9, plain (uncoated) surface. The plain finish is used in dry or controlled environments, or when the screw will later be coated, for example with painting, flake coating, or hot-dip galvanizing (HDG). Class 10.9 provides high tensile strength for demanding mechanical joints in machinery, fixtures, and steel structures. Available in multiple lengths and variants from SWEBOLT & BOTNIA BOLT.