Strongest Bolt? Grades Explained & Dyno Tested For Science

Our lifetime of TOOL RANKINGS https://torquetestchannel.etsy.com
A Grade 8 assortment: https://amzn.to/3Cu6sq3 or Metric Class 10.9: https://amzn.to/3vUyF6O Grade 5: https://amzn.to/3MHyYt7 Metric Class 8.8: https://amzn.to/37PtUnD will pay for itself over time. When you notice a bolt slightly mangled, don't reinstall it, replace it with something better! On today's For Science episode we explain the differences between and test most of grade 1, grade 2, grade 5, grade 8, grade 9 / L9, Bowmalloy and Stainless 18-8 bolts as well their metric class equivalents 5.8, 8.8, 10.9 and 12.9 bolts and nuts. Not a lot of info is out there on when these fail from over-tightening vs their recommended tightening, or if impacting is different than turning a wrench when it comes to failures.
Torque of TTC is working for Astro Tools who also make impact wrenches (air). TTC is not the only testing out there, always consider multiple sources when looking at a tool!

0:00 What we're testing
2:06 Grade 1
5:11 Grade 2, 3
5:56 Grade 5/Class 8.8
8:14 Grade 8/Class 10.9
10:44 Grade 9/Class 12.9
13:37 Bowmalloy
15:30 Stainless
17:54 Hardness