If you want the absolute strongest thing, here you go. 12.9 Class bolts are the strongest bolts made. Metric 12.9 Class (metric equivalent to grade 9) hardened black hex bolt with hardened yellow zinc plated washer and flag nut retainer for attaching the front track bar to the axle compatible with all 1997-2006 Wrangler TJ's and LJ's, 1984-2001 Cherokee XJ's, 1986-1992 Comanche MJ's and 1993-1998 Grand Cherokee ZJ's. Flag nut replaces Mopar part numbers: 6504449, 52087888, 34202463, 11501850. The bolt replaces Mopar part numbers: 6505549AA, 34202640, 34201927, 34201492. The flag nut is yellow zinc plated for corrosion resistance and is double the thickness of the OEM flag nut so it won't break on you. The prevailing torque flange lock nut is welded to the bracket, not just press fit like the factory ones were. This is a heavy duty upgrade that does not require any drilling or modification to use. The bolt is the same size as factory but is a higher grade, 12.9 Class vs the factory 10.9 Class. It is 20% stronger than the OEM bolt. This is a high quality direct OEM replacement that was designed and is manufactured by Region Offroad (a small business in the US) to improve on the shortcomings of the factory flag nut. All others for sale that look the same as this are rip offs of our design from you can guess where. They even took the text from this description. NOTES: 1. The nut used on the flag nut is a prevailing torque lock nut (also known as top lock.) It is a mechanical locking nut designed for use on vehicle suspensions to prevent coming loose from vibration during use. You should not be able to thread the bolt all the way through the nut by hand. This is not a defect. A wrench or socket will be required for installation. 2. The correct torque is 50 ft/lbs dry. If using anti-seize, threadlocker or any lubricant reduce the torque by 20%. Always follow the torque specs.