Item Type: M8 Screw Bolt Product Standard: DIN603 Thread Diameter: Approx. 8mm / 0.3in Dome Diameter: Approx. 20.65mm / 0.8in Dome Height: Approx. 5.6mm / 0.2in Square to Flat: Approx. 8.58mm / 0.3in Square Height: Approx. 5.6mm / 0.2in Material: A2-70 Stainless Steel What is A2-70 Stainless Steel? A2 stainless steel is commonly referred to as 304 or 18/8 because it contains 18% chromium and 8% nickel. A2 is an austenitic stainless steel and is almost non magnetic but will still stick lightly to a magnet due to the cold working process. A2 -70 is the most commonly used grade, the 70 represents a tensile strength of 700N/mm2. A2 is suitable for a wide range of applications in alot of different industries such as the automotive industry in applications such as body panelling and bumpers etc, the food industry and catering due to its ease of cleaning and corrosion resistance, also commonly used in the engineering industry and architecture, A2 is also favoured by the remote control and model making enthusiasts. Also a favourite for many different DIY jobs in and around the home and garage for those jobs where a standard BZP fastener will not do. In general A2-70 is ideal for a whole range of uses where a good finish is needed on an interior or exterior applications. 1、30Pcs in 1 Set: The kit contains 30pcs coarse thread carriage screws, which are sufficient in quantity and can be used and replaced directly. 2、A2-70 Stainless Steel: Made of A2?70 stainless steel, with a tensile strength of 700N/mm2, corrosion resistant, hard and durable. 3、Standard Size: The thread standard is DIN603, with standard M8x1.25 coarse thread, accurate size and strong practicability. 4、Use with Nuts: Often used in conjunction with nut to fasten and connect two parts with through holes. 5、Optional Length: The carriage bolts are lengthened, and there are many options for length, choose the right bolts according to your needs. 30 x M8x90 Bolts