Dimensions for undercuts are strictly dependent on the thread pitch, not just the diameter.

UNI ISO 4755 standard specifies the dimensions for thread undercuts gola di scarico

The solves both by providing a smooth, recessed relief.

: Una gola ben raccordata riduce l'effetto intaglio, migliorando la resistenza a fatica del componente. Lavorazione CNC

The 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

Uni Iso 4755 ((top)) | Tabella Gola

Dimensions for undercuts are strictly dependent on the thread pitch, not just the diameter.

UNI ISO 4755 standard specifies the dimensions for thread undercuts gola di scarico

The solves both by providing a smooth, recessed relief.

: Una gola ben raccordata riduce l'effetto intaglio, migliorando la resistenza a fatica del componente. Lavorazione CNC

The 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

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