Aluminium Jam Nut
5/8-18 L/H Thread With 3/4 Hex Black

5/8" thread jam nuts with 3/4" head instead of 15/16" and new 3/4" jam nuts with 15/16" heads instead of 1/16" not only reduce total weight of the car, but when used on suspension pieces, reduce unsprung weight. Not only that, but 3/4" is the same size as your radius rod, and the 1/2" bolts used on your rod ends. One size wrench does it all in a frantic assembly or pit stop.