Tabella Gola Uni Iso 4755 ^hot^ ★

) for fasteners with external metric ISO threads. These undercuts are critical features used to ensure a "complete" thread runs all the way to a shoulder, allowing mating parts like plugs or screws to sit perfectly flush against a surface. iTeh Standards Functional Importance of Under-cuts

UNI ISO 4755 is the general recommendation, but specific product standards (like those for specialized plugs) may take precedence. tabella gola uni iso 4755

| Standard | Content | |----------|---------| | | Same as UNI ISO 4755 (international version) | | DIN 76-1 | Very similar – thread run-outs and undercuts for metric threads | | UNI 9460 (obsolete) | Older Italian standard, now replaced by UNI ISO 4755 | | ISO 3506 | Mechanical properties – references undercuts for fatigue life | ) for fasteners with external metric ISO threads

I valori di tolleranza sono espressi in micron (μm) o in millimetri (mm). | Standard | Content | |----------|---------| | |