Round head screw with square neck
Category C product. Tolerances according to ISO 4759. Mechanical properties according to ISO 898/1 (see general technical notices).
- The three different sets of rules are not identical. In practice, the differences generally allow for either use in most cases. The table refers to DIN which is the one mainly distributed by Berardi.
- The unthreaded shaft diameter, could correspond to the average diameter of rolling.