Gola Uni Iso 4755

| Property | Requirement | |----------|-------------| | Width across flats (s) | Tolerance: h11 to h14 depending on product grade | | Head height (k) | Tolerance: h14 for formed heads | | Wrenching interface | Hexagon external (or internal if specified) | | Reference edge | Underhead fillet or Gola shoulder radius ≤ 0.5× s |

This report outlines the technical specifications defined by (adopted in Italy as UNI ISO 4755 ) concerning the shape and dimensions of thread run-outs (grooves) for fasteners such as bolts, screws, and studs. The standard ensures compatibility between fasteners and nuts, preventing stress concentration and assembly failures. gola uni iso 4755

GOLA M10x1.5 – UNI ISO 4755 – 8.8

It provides a "relief" area that allows a nut or a threaded component (like a plug) to be tightened completely against the shoulder of the workpiece without interference from the incomplete threads that naturally occur at the end of a machining process. While UNI ISO 4755 focuses exclusively on ,

While UNI ISO 4755 focuses exclusively on , it is often used alongside other standards: gola uni iso 4755