- Dimensions of the head, screw length and thread approximately according to DIN. Acceptance according to VDI 2544.
 - The tolerances must be observed 24 hours after fabrication, for all other tolerances, refer to ISO 4759, part 1, but with the factor 2.
 - These technical recommendations are of a general nature. For more detailed specifications, please refer to VDI 2544.
 
