Tensile stress area
where can I find the values there
There are three commonly used strength parameters for bolts to estimate bolt failure. Yield strength, Ultimate Strength and Proof Strength (90% of Yield strength). The most commonly used parameter is the Yield strength of the bolt's material or grade, but users should choose a strength value that is most appropriate for the application.
metric bolt table
Bolt Depot - Bolt Grade Markings and Strength Chart
is it correct?
Is it wrong?
the rdfasteners.com has some missing data and errors. I found a new one here:
Retrieving data ...