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Understanding Bolt Markings and Torque by tanujaayer is a document available to read on EtoBox.
What is Understanding Bolt Markings and Torque about?
The marks on a bolt head indicate the manufacturer and grade/material properties. The manufacturer mark identifies the company and the grade mark identifies the material standard, such as "8.8" for a property class. These marks are usually on the top of the bolt head and can be raised or depressed, with raised being preferred.
- Author
- tanujaayer
- Language
- EN