RUGGED AND DURABLE - SG TZH Socket Head Cap Screws Bolts made of high-quality 18-8(304)Stainless Steel，which has higher corrosion resistance and anti-rust effect than ordinary bolt, longer service life, not easy to damage, more solid. Product Size - Thread Diameter: 5/16"; Thread Pitch: 1/18"; Screw Length: 6". Head Diameter: 0.464". Head Height：0.307". Hex Drive Size: 1/4". Please check specfication by picture 2 WIDE RANGE OF APPLICATIONS - Socket Head Cap Screws Bolts can be widely used in the home and office appliance, communication equipments, ship assembly , the mechanical industry and small repairs around shops, garages or home furniture fasteners. VALUE PACKAGING AND EASY TO USE - This Socket Head Cap Screws Bolts package contains 10Pcs , They are ideal for use at home, in the office or at work. INTIMATE SERVICE - SG TZH focus on customer satisfaction, if you have any questions or are not satisfied, you can contact us by email, we will solve all your problems as soon as possible. 1