They exist-
#7
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Depends on three things really (off the top of my head):
A) Bolt strength in single shear.
B) Material/heat treat used on material.
C) If adapter is aluminum, is there a shouldered press-fit steel insert (threaded).
A) Bolt strength in single shear.
B) Material/heat treat used on material.
C) If adapter is aluminum, is there a shouldered press-fit steel insert (threaded).