Brass Jar Nut / Jumbo Nut / Jar Hex nut Brass Dome Nut / Multi Nut / Chutney Nut, Brass Jar Handle Inserts, Brass Mixer coupler Inserts, – Threads : BSW, BSPT, ISO Metric And per customers advise – Plating, Coating And Surface: Knurled surface, Nickel, Natural Brass as per customers requirement