1/2" LH ALUMINUM JAM NUT
5/8" RH STEEL JAM NUT
1/2" RH ALUMINUM JAM NUT
5/8" RH STEEL JAM NUT- 3/4" HEX
3/8" RH STEEL JAM NUT
5/8" LH STEEL JAM NUT- 3/4" HEX ALLOWS USE OF 3/4" WRENCH TO ADJUST