M6 x 1.00mm Hex Nuts, Carbon Steel 18-8, Black Oxide, Full Thread, Hex Drive, Bright Finish, Carbon Steel Black Oxide Finished, Replacement Nut for DIY Home Mechanism 50 Pack
Constructed from carbon steel, black oxide finish, higher corrosion resistance and anti-rust effect than ordinary nuts, longer service life, not easy to damage, more solid
Self-locking serrated flange digs into the material being fastened to help prevent loosening, easy installation and provide mild vibration resistance