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How to Check Backlash Understanding Metric Bolt & Screw Grades — & Head Markings! Quickly Determine the Right Drill Bit Size for a Screw or Anchor #shorts Hello friends About this video :- Dosto ies video ke madhyam se aap sikhenge ki Bolt Grade kya hota hai, bolt ke uper likhe In this video we go over the differences between Grade 5 & Grade 8 bolts & hardware. We hope you found this interesting, please ...