Features: _x000D_ 100% brand new and high quality._x000D_ _x000D_ These rivet nuts are made of carbon steel providing strength, sturdy and durable._x000D_ _x000D_ With open end, small flange, round hole, threaded inner wall and partial anti-skid surface, the flat head rivet nuts have a good performance of fastener function._x000D_ _x000D_ There are various sizes, M3/M4/M5/M6/M8/M10/M12, and it is normally chosen because of its low profile compared to other nuts. _x000D_ _x000D_ Rivet nuts can be installed in many material, such as steel, plastic and fiberglass. _x000D_ _x000D_ _x000D_ Specification: _x000D_ Type: Flat head rivet nut _x000D_ Material: Zinc plated carbon steel _x000D_ Size & Quantity: _x000D_ M3 40pcs _x000D_ M4 40pcs_x000D_ M5 30pcs_x000D_ M6 20pcs_x000D_ M8 10pcs_x000D_ M10 5pcs_x000D_ M12 5pcs _x000D_ Weight: 410g / 14.5oz (approx.) _x000D_ _x000D_ _x000D_ Package list:_x000D_ 1 box * Rivet Nuts