Hy mummdogg,please remember to tell us what year of truck you are asking about, I'm going to assume that these parts are for your 1953 [from your profile]. The arm is called a steering or third arm.I can't be sure about the bolts, but they will be either a 9/16" X 18t.p.i. X 3 7/32"long, or a 1/2 X 20t.p.i X 3 1/32"long, so measure the diameter of the hole, and pick the correct bolt. The stock bolts were drilled for a cotter pin, but you could use a "Stover" locknut on them. I don't think the drag links are the same in 1953 trucks, they appear to be in later years, hope that helps.
Last edited by 3B; 03/05/2010 5:33 PM.