These black internal hexagon socket screws and nuts are ideal for creating strong and secure connections in a variety of projects. Their sleek design makes them suitable for use in bookbinding, leatherwork, and other crafts. The internal threading ensures a tight fit, providing stability and durability for all your binding needs. Features -Color:Black -Material:Iron -Size:0.80X0.60X0.60cm/0.31X0.24X0.24in -Size:0.80X0.60X0.60cm/0.31X0.24X0.24in -Thread: -Sturdy material: manufactured from firm materials, these screws and nuts are built to last, offering reliable performance in various applications -Hexagon socket: the internal hexagon design allows for easy and efficient tightening and loosening, streamlining the installation and removal process -Stable connection: the interlocking screw and nut with clamp plate ensure a strong and stable connection, preventing any movement or detachment -Antiloosening design: the clamp plate locking screws are designed to prevent loosening and falling off, providing added security and stability -ideal for small sizes: specifically designed into smallsized screws and nuts, making them ideal for precision applications and intricate projects Package list: 20 x nuts 40 x screws