Tabella Gola Uni Iso 4755 ~repack~

La tabella GOLA secondo la norma UNI ISO 4755! Ecco una guida utile per comprendere e utilizzare questa tabella.

Esempio

• Undercut diameter (d₁) is always smaller than the thread minor diameter to guarantee clearance.
• Undercut width (a) is measured axially from the last full thread to the start of the shank.
• The radius (r) is recommended for fatigue-resistant designs but is not always mandatory.

“GOLA M6 – a max 2.0”

Transition Angle: The angle between the undercut and the threaded portion should typically be at least 30°. tabella gola uni iso 4755

Conclusione

• UNI – Ente Italiano di Normazione (www.uni.com)
• ISO – International Organization for Standardization (www.iso.org)

The so-called “tabella gola” (Italian for “undercut table”) is the core part of this standard. It provides standardized dimensions for the groove (undercut) machined at the end of a threaded portion to allow a threaded part to screw fully against a shoulder or to facilitate thread cutting tool run-out. La tabella GOLA secondo la norma UNI ISO 4755