1、These nuts are made of zinc plated carbon steel, sturdy and durable. 2、Hexagonal shape has 6 sides that gives a good granularity of angles for a tool to approach from. 3、There are many common size of hex flange nut that you can use for general purpose. 4、These hex flanged nuts will be great replacement for industrial and construction fasteners. 5、Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Features: These nuts are made of zinc plated carbon steel, sturdy and durable. Hexagonal shape has 6 sides that gives a good granularity of angles for a tool to approach from. There are many common size of hex flange nut that you can use for general purpose. These hex flanged nuts will be great replacement for industrial and construction fasteners. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Specification: Material: 304 stainless steel Size & Quantity: M3* 0.3      10pcs M4* 0.4      10pcs M5* 0.4      10pcs M6* 0.5      10pcs M8* 0.6      10pcs M10* 0.9    5pcs Weight: 214g / 7.5oz (approx.) Package list: 1 box * Nuts