SKU: FKBAJNR10
UPC: 800199721003
MPN: AJNR10
The Jam Nut 5/8-18 Alum RH from FK ROD ENDS is a precision fastening component engineered for high-performance suspension and steering linkage applications where thread-locking reliability is critical. This aluminum jam nut serves as a secondary locking mechanism on rod end bearings and spherical joints, preventing vibration-induced loosening during aggressive driving, off-road use, or competition driving. Whether you're building a custom suspension geometry or maintaining existing performance linkages, this compact fastener is essential for maintaining preload integrity and system safety over extended service intervals.
Manufactured from lightweight aluminum in natural finish, the Jam Nut 5/8-18 Alum RH features a right-hand thread orientation compatible with standard SAE fastening conventions. The 5/8-18 thread specification (5/8-inch diameter, 18 threads per inch) ensures compatibility with FK's AJNR-series rod end bearings and common suspension tuning components. Aluminum construction minimizes rotating mass and unsprung weight while providing corrosion resistance superior to standard steel, critical for long-term durability in salt-exposed or high-moisture environments. The jam nut's compact profile—measuring just 1.6 inches across—allows installation in tight suspension packaging without interfering with adjacent components or suspension travel.
Street and track builders rely on FK ROD ENDS jam nuts to lock rod end preload settings that control suspension geometry, toe-in adjustment, and anti-roll bar effectiveness. Installation requires torquing the primary fastener to specification, then securing the jam nut against it to create a compound lock that resists vibration loosening. This dual-lock approach is standard across professional suspension tuning, rally preparation, and drag racing applications where repeated acceleration, braking, and cornering loads demand absolute fastener security. Each unit ships individually, with the right-hand thread specification clearly marked for correct installation orientation.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
