Tabella Gola Uni Iso 4755 [updated] -

The UNI ISO 4755 standard (equivalent to ISO 4755:1983) specifies the required form and dimensions for thread undercuts (Italian: gole di scarico) on externally threaded fasteners like bolts and screws. These undercuts are used to provide clearance for a mating part (such as a plug or sealing element) to sit flush against a shoulder when the thread cannot be run all the way to the end. Key Specifications of ISO 4755

3. Comparison: Chamfer vs. Run-Out (Gola)

Since the user asked for "Gola" (Groove), it is crucial to distinguish between the End Chamfer and the Thread Run-Out. tabella gola uni iso 4755

Mechanical Engineering: For the design and manufacturing of mechanical components.
Aerospace: Where precision and reliability are critical.
Automotive: In the production of vehicle parts and accessories.

Transition Angle: The standard specifies the shape and transition between the threaded portion and the undercut, generally requiring a minimum transition angle of 30∘30 raised to the composed with power where applicable. Radii ( The UNI ISO 4755 standard (equivalent to ISO

Dimensioni nominali (colonna "DN"): valore nominale della dimensione del foro o dell'albero.

Tolleranze (colonne "Tolleranza"): valori di tolleranza per le dimensioni del foro e dell'albero, espressi in mm.

Gola (colonna "Gola"): valore della gola, ovvero la differenza tra la dimensione massima e la dimensione minima del foro o dell'albero.

Standardization: It ensures that there is a uniform method of presenting and interpreting data related to the Tabella Gola Uni. This uniformity is vital in industries where precision and consistency are paramount. Mechanical Engineering : For the design and manufacturing