NUT NYLOCK NF 3/4|Nylon Insert Lock Nuts typically have a cased metal outside formed into a hex pattern easily torqued by a wrench or socket.
Internet Drop Down Category=5290|Item Type=S|Master Pack Unit of measure=EA|Size=3/4 in.|Style=Nylock Nut, NF|Unit of Measure=EA|Weight=0.1200|Brand=Andersson Supply