250Pcs M3 - M8 12.9 High Tensile Black Cup Point Grub Screws Hex Socket Set

Quantity: This set contains 250 pieces of black 12.9 - grade high - tensile cup point grub screws, providing a rich assortment for different projects. Dimensions: Ranging from M3 to M8 in size, specific dimensions include combinations like M8x8mm, M6x10mm, etc. Each size has 25 pieces in the set, catering to various fastening requirements. Material: Crafted from high - quality steel with a black finish, these screws feature a 12.9 high - tensile strength rating. This ensures they are robust, resistant to deformation, and can withstand significant stress. Performance: The cup point design offers a concentrated force for a secure hold. With clear and well - formed threads, they can be easily screwed into corresponding holes. The hex socket allows for convenient tightening and loosening with a hex key, providing a stable connection. Application: Suitable for a wide range of applications, such as machinery assembly, electronic device installation, furniture manufacturing, and DIY projects. They are effective in firmly connecting components in different materials like metal, plastic, and wood. Safety: When handling these screws, use appropriate tools to avoid hand injuries. Keep them out of reach of children under 5 years old due to their small size to prevent choking hazards.