5/8 UNF HEX HALF NUT ZC

The half nut (also known as a jam nut) is a thin nut, normally used under a full nut to develop locking action
Thread = 18 TPI

GST Incl
Excl
5/8 UNF HEX HALF NUT ZC
NHLFF058ZC
Each
$2.4030