8made of 3/8 o.D. X .035 wall x 5.7 4130 steel tube; finish f1.02; alternate material 7/16 o.D. X .065 wall, mil-t-6736 condition n 4130 steel tube; diameter applies after plating; heat treatto 125/145 ksi per mil-h-6875; holes mate with 808859-3, -5, -7, -9
