1/2 BSW NYLOC NUT ZP

The Nyloc nut is an economic locking nut and ideal in applications where vibration or motion could loosen or undo the nut. It uses a nylon insert located towards the top of the nut, reducing its inner diameter, which then deforms over the mating thread.
Thread = 12 TPI British Standard Whitworth

GST Incl
Excl
1/2 BSW NYLOC NUT ZP
NNYLW012Z
Each
$0.3031