Tensile strength and pull out force of a bolt

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SUMMARY

The tensile strength of an M8, grade 8.8 bolt can be calculated using formulas found on pages 1278-1279 of MACHINERY'S HANDBOOK 23 REVISED EDITION. Key factors include the material the bolt engages with and the specific formulas for pull out force. Understanding these parameters is crucial for accurate calculations in mechanical applications. The chapter on "Threads and Threading" may provide additional insights relevant to bolt performance.

PREREQUISITES
  • Understanding of tensile strength calculations
  • Familiarity with bolt grades, specifically grade 8.8
  • Knowledge of material properties for engagement materials
  • Access to MACHINERY'S HANDBOOK 23 REVISED EDITION
NEXT STEPS
  • Research the tensile strength formulas specific to M8, grade 8.8 bolts
  • Study the material properties of the substrates the bolt will engage with
  • Explore the chapter on "Threads and Threading" in MACHINERY'S HANDBOOK for additional context
  • Investigate pull out force calculations in mechanical engineering literature
USEFUL FOR

Mechanical engineers, structural designers, and anyone involved in fastening technology or bolt performance analysis will benefit from this discussion.

Ben Laycock
Hi,

I'm looking for some help regarding working out the tensile strength of a M8, grade 8.8 bolt and the pull out force.

What information do I need to gather regarding the bolt and the material the bolt is engaging in to?

Thanks,
 
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Most of the formulas are on pgs 1278-1279 of MACHINERY'S HANDBOOK 23 REVISED EDITION, INDUSTRIAL PRESS INC. New York, ISBN 0-8311-1200-X.
This is an older edition so the page numbers may have changed, the chapter is "Fasteners" and the section is "Working Strength of Bolts."

The chapter following is "Threads and Threading," which may also be useful.
 
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Thank you
 
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