The standard specifies the form and dimensions of thread undercuts (Italian: gola di scarico ) for fasteners with external metric ISO threads. These undercuts are essential for ensuring a flush fit when a screw or bolt is tightened against a surface, as they provide clearance for the non-threaded transition zone. 🛠️ Purpose of the Undercut
The UNI ISO 4755 standard is part of a broader series of international standards developed to ensure quality, safety, and efficiency in various industrial and technical domains. The "UNI" prefix denotes that the standard is adopted and recognized within the Italian standardization system, while "ISO" indicates its alignment with international standards set by the International Organization for Standardization. tabella gola uni iso 4755
This standard defines the perfect undercut dimensions for ISO metric threads. It tells you exactly: 👉 How deep to cut 👉 How wide to make the relief The standard specifies the form and dimensions of