This standard specifies properties for size M8 to M80×6 T-head bolts with double nib. They are designed for use in attaching components to foundations or similar structures by means of T-slots, such as are specified in DIN 649, where T-head bolts are considered adequate detachable fasteners.
DIN 188:2011 history
2024DIN 188:2024-03 T-head bolts with double nib / Note: Date of issue 2024-02-16*Intended as replacement for DIN 188 (2011-02).