Lower Ball Joint bolts needed for K-H setup
I would not try and make these long shoulder bolts on a lathe unless you are using some friggin tough metal. Grade 8 bolts are 150K psi and the threads are rolled so they are in essence "forged" threads as opposed to lathe cut threads that are weaker as there is no work hardening. IIRC the shank provided a stress riser free, high tolerance fit of the cap screw.
65dartman posted these pics of round heads and full shoulder cap screws.
I would not try and make these long shoulder bolts on a lathe unless you are using some friggin tough metal. Grade 8 bolts are 150K psi and the threads are rolled so they are in essence "forged" threads as opposed to lathe cut threads that are weaker as there is no work hardening. IIRC the shank provided a stress riser free, high tolerance fit of the cap screw.
65dartman posted these pics of round heads and full shoulder cap screws.
