Gola Uni | Iso 4755 [top]

| Thread Pitch ($P$) | $d_g$ (Groove Diameter)* | $r$ (Radius Min) | | :--- | :--- | :--- | | $\le 0.5$ mm | $d - 1.2P$ | $0.2P$ | | $> 0.5 \text to 1.0$ mm | $d - 1.5P$ | $0.3P$ | | $> 1.0$ mm | $d - 2.0P$ | $0.5P$ |

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