BOLT, Hex Head, M14 x 2.00 x 111.6, LCA to Axle, Mounting
SOURCE: Mopar 1998 Jeep TJ Parts Catalog
I have the Mopar parts catalog for most Jeeps 1981 - 2005
Caster can be adjusted by installing cam bolts and rotating the cams on the lower suspension control arm. You can pick up the cam bolts at the Jeep dealership if you don't have adjustable control arms.