Features: Elevate your professional projects with our comprehensive 600pcs Screw Set, featuring quality carbon steel for unparalleled strength and durability. The set includes a variety of sizes, each precision engineered with a uniform thread pitches and clear threads, ensuring an even distribution of force and ease of use with the included hex key. Suitable for handymen, mechanics, hobbyists, and homeowners, this versatile screw and nut assortment caters to a wide array of fastening needs. Whether you're assembling furniture, working on mechanical equipment, or tackling home renovation tasks, this screw set provides performances in any setting. Organized in a convenient storage box, this Hex Socket Screw and Nut set ensures that you have the right size at hand for any job, making it an essential addition to your tool collection. Specifications: Material: carbon steel Content: 3MMx6 50pcs,3MMx8 40pcs,3MMx10 40pcs,3MMx12 30pcs,3MMx16 20pcs,3MMx20 20pcs,100pcs nuts,100pcs flat washer, 100pcs spring washer,and 1pc 2.5 Hex key Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 600pcs Hexagon Socket Screws