Specifications High-concerned chemical:None Dimensions:M2*10 DIY Supplies:Metalworking Model Number:M6x12/16/20/25mm Material:IRON Origin: China p{margin-block-start: 0; margin-block-end: 0} In this kit, you will receive 40 M6 T-shaped plug-in bolts in 4 sizes, with 10 pieces of each size. The size is 12/16/20/25mm. And 40 pieces of M6 hexagonal flange nuts are provided. There are a total of 80 items. Adequate quantity and different sizes make your work easier and more economical! Size details : European standard 30 series aluminum profiles. Hammer head size: 15.5 x 7.8 x 5 millimeters/0.61 x 0.3 x 0.2 inches (length x width x depth). Thread diameter: 6mm (m6). Bolt length: 12 millimeters/0.47 inches, 16 millimeters/0.63 inches, 20 millimeters/0.78 inches, 25 millimeters/1 inch. Hammer head screws made of aluminum profiles are embedded during assembly for easy installation. Durable Quality : The surface of carbon steel T-shaped screws is nickel plated, with high hardness, wear resistance, corrosion resistance, oxidation resistance, preventing damage caused by scratches and wear, which can effectively improve the service life. Good polishing performance, smooth surface, and clear threads. These T-shaped wooden bolts can be used with T-shaped nuts, knobs, or T-shaped rails to create various projects. Easy to use : The bolt groove is first measured and cut, using a pre cut T-shaped track that matches the size of the T-shaped bolt head. Once the track is established, the T-bolt can easily slide into place and then be tightened with a knob or T-nut. T-bolts are stable and have good fastening and connection strength. The T-shaped head design is easy to install and disassemble. Standard size, transparent thread, meets various engineering requirements. Widely used, T-shaped bolt sliding screws are fixed between aluminum profiles and accessories and need to be used together with nuts. Widely used in aluminum alloy, frame assembly and clamping locks, T-shaped groove guide rails, etc. Also used for furniture assembly, paper machines, etc. The most commonly used for assembly of lifting, metallurgical, mechanical and electrical equipment, as well as debugging of fixed mechanical equipment.