1" UNC SLOTTED NUT BL GR5

Slotted nuts are used together with a bolt and a cotter pin to create a secure nut in place so that it cannot be tightened or loosened. In Metric these are known as Castle nuts.
Thread = 8 TPI

GST Incl
Excl
1" UNC SLOTTED NUT BL GR5
NSLTC100B
Each
$17.8857