A2 STAINLESS STEEL FLANGE HEXAGON HEX HEAD COARSE METRIC BOLTS SCREWS DIN 6921. Some sizes are part threaded and some fully threaded. Please select your size & quantity from the drop down lists above. Bolts lengths are measured from the underside of the head. Manufactured from A2 Stainless Steel For Improved Corrosion Resistance. A2 (304) Stainless Steel DIN 6921. We are UK registered company and a. Please allow slightly longer for weekends and national holidays. Please fill out all the necessary information on this page and also give as much additional information as possible as to why you wish to return this item. This item is in the category "Business, Office & Industrial\Fasteners & Hardware\Other Fasteners & Hardware". The seller is "bolt-world" and is located in this country: GB. This item can be shipped to United Kingdom.