Ball Joint Hardware

[NvrDun71]

Originally Posted by Che70velle

These are a 5/16" bolt I think? Grade 8 5/16" is torqued to 25 ft. Lbs.
3/8" grade 8 bolts torque to 45 ft. Lbs.

These are actually 1/4" fine thread

Originally Posted by Bryce

Maybe the nut seized on the bolt. I see this frequently with bolts that do not have lubricant. Usually its a stainless fastener.

That was my first thought as well but car has never seen the road with these parts and there is no visual signs of corrosion

[NvrDun71]

From my research seems a 1/4-28 grade 8 bolt should be torqued to 14 ft lb dry. Going to roll with that for the time being. That probably also explains my broken bolt trying to get the 25 ft lbs the factory assembly manual called for.

[Che70velle]

My chart calls for 12 ft. Lbs. for a 1/4" fine thread. This would definitely explain the broken bolt.