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Why use High Tensile Bolts? How to Identify?

What is the Tensile Strength of a Bolt?

Bolt grades are closely related to tensile strengths. In basic terms, the tensile strength of a bolt refers to the maximum stress the bolt can withstand before breaking. Thus, the higher the tensile strength, the higher the weight a bolt can sustain and the higher its capacity to bear impact.

High tensile bolts are used for high-stress fastening applications. For example, you would usually require high tensile bolts in the realms of construction or other similar industrial environments. These high tensile bolts help to secure heavy objects together and shoulder their weight for many years, or even decades. Further to this, High Tensile Bolts are commonly used in the Automtovie industry, for instance, the linkages of a suspension system, or to hold a brake caliper to the knuckles.

When it comes to the relationship between grades and tensile strengths, the higher the grade the higher the bolt’s tensile strength.

Reading the Head Markings to identify the Tensile Strength of the Bolt.

The head markings, if present, will indicate if the bolt or setscrew is metric or imperial.

Breaking Strength Comparison

Check out the easy to read chart below to find compare all Bolt/Material grades and which product is right for you!

Check out the example below of some instore products

  • 4.6 Metric Bolt
  • 8.8 Metric Bolt
  • 10.9 Metric Bolt
  • Grade 5 Imperial Bolt
  • Grade 8 Imperial Bolt