Tabella | Gola Uni Iso 4755 Better

The standard specifies a minimum angle of 30° for the transition between the undercut and the thread. Relationship with Other Norms: While UNI ISO 4755 covers undercuts for external threads,

: Guidelines for documentation are provided to ensure that all relevant information is accurately recorded and easily accessible. tabella gola uni iso 4755

Without a standardized undercut:

If a screw does not conform to ISO 4755 design rules (e.g., the groove is too shallow or the angle is wrong), the screw will likely fail during installation. The standard specifies a minimum angle of 30°

This standard is recommended for bolts, screws, and plugs unless a specific product standard (like DIN 7965) mandates a different geometry. 🔍 Related Standards tabella gola uni iso 4755