Nut Nyloc 6MM 30 Zinc Plated Metric Thread For Set Screw & Bolt Hex M6 Z50
Nylon insert nuts made by DYNATEX. These nuts have a one-way drive style and are made of steel and zinc. They are grade 5 and have an open end type. The nylon insert is situated at the top of the nut and when tightened locks against the thread.