Hexagon socket head cap screws
Hexagon socket head cap screws, also known as inner hexagon bolts, cap head screws, or inner hexagon screws
Description
Hexagon socket head cap screws, also known as inner hexagon bolts, cap head screws, or inner hexagon screws, have a cylindrical head with an internal hexagon. They are used in a similar way to external hexagon bolts. They are made of stainless steel or iron, with mechanical performance grades of 4.8, 8.8, 10.9, and 12.9, with 10.9 and 12.9 being commonly used. The standard is DIN 912.