_x000D_ These screws and nuts are made of 12.9 grade alloy carbon steel, which provides strength and is commonly used when requiring higher mechanical properties. There are many length for your choice which can be commonly used in home and office appliance, machinery, furniture, repair and DIY inventions. _x000D_ _x000D_ _x000D_ Features: _x000D_ Made of 12.9 grade alloy carbon steel, which provides strength and is commonly used when requiring higher mechanical properties. _x000D_ Ideal for use in confined areas where you need hex socket cap head screws. _x000D_ Fixing component, industrial and construction fasteners. _x000D_ 17 common sizes and different quantities that you can choose for general purpose use. _x000D_ Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: 12.9 grade alloy carbon steel _x000D_ Color: Black_x000D_ _x000D_ Type: Hex socket cap head _x000D_ Size:(optional) _x000D_ M3*4mm(fully-threaded) _x000D_ M3*5mm(fully-threaded) _x000D_ M3*6mm(fully-threaded) _x000D_ M3*8mm(fully-threaded) _x000D_ M3*10mm(fully-threaded) _x000D_ M3*12mm(fully-threaded) _x000D_ M3*14mm(fully-threaded) _x000D_ M3*16mm(fully-threaded) _x000D_ M3*18mm(fully-threaded) _x000D_ M3*20mm(fully-threaded) _x000D_ M3*22mm(fully-threaded) _x000D_ M3*25mm(fully-threaded) _x000D_ M3*30mm(partially-threaded) _x000D_ M3*35mm(partially-threaded) _x000D_ M3*40mm(partially-threaded) _x000D_ M3*45mm(partially-threaded) _x000D_ M3*50mm(partially-threaded) _x000D_ Quantity: 24pcs, 50pcs, 100pcs(optional) _x000D_ _x000D_ _x000D_ Package Includes:_x000D_ 1 Bag x Screws _x000D_ _x000D_ _x000D_ _x000D_ Note:_x000D_ 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.