Counterbore in the internal thread

Symbol -
Unit -
Attribute-ID vdi_2230_sinking_at_the_internal_thread_combo
Numeric ID 19308
Value Type PMString

A counterbore at the internal thread can be used to increase the clamping length lK, which increases the resilience of the bolt and the clamped parts.

The counterbore is described by the counterbore diameter dS and the counterbore depth tS.