Permissible assembly preload

Symbol	F_Mzul
Unit	-
Attribute-ID	vdi_2230_assembly_preload_permitted_by_typing_directly_combo
Numeric ID	12187
Value Type	PMString

The permissible assembly preload F_Mzul for a selected bolt can be read from tables in VDI 2230 (tables A1, A2, A3, A4) with a utilization factor v of 0.9 of the minimum yield strength R_p0.2min, or calculated directly (R7) with specification of the utilization factor.

The following options are available:

User specified: direct numerical specification; e.g., from the tables in VDI.

Acc. to VDI 2230: calculation (R7) based on bolt geometry, thread friction, yield strength, and degree of utilization.