Araldite is amazing stuff. The mine site that i did my apprenticeship at used to to glue crusher mandrels to the drive spindle. The guys used to mix it up in 20 ltr buckets with mixing wands attached to electric drills. The mandrels where in excess of 20t and crushed iron ore for a living. The amount of force the loctite could handle was amazing.
If you prepped the sector shaft and pitman arm properly (ie free of grease etc) you could probably glue it on with araldite and loose the nut all together....:D:p

