According to ISO 4755, the dimensions are largely dependent on the thread Pitch ($P$).
The ISO 4755 standard provides a detailed table of dimensions in millimeters, directly tied to the and nominal diameter of the fastener. Standard Requirement Undercut Diameter ( ) gola uni iso 4755
Previously used in Italy for incomplete threads and undercuts; however, the portion regarding undercut dimensioning was withdrawn in 2009 and replaced by the UNI ISO 4755 standard . According to ISO 4755, the dimensions are largely
Properly dimensioned undercuts ensure a smooth transition in the threading, which helps prevent stress concentrations that could lead to cracks or mechanical failure under load. According to ISO 4755
To implement Gola Uni ISO 4755 effectively, organizations should: