<![CDATA[EC21 Product Catalogs - metric system]]> <![CDATA[ASTM A490 Heavy Hex Structural Bolt]]> <![CDATA[DIN6921 Class 4.8,6.8,8.8,10.9,12.9 Hexagon Flange Bolts]]> <![CDATA[En 14399-3 Hex Nuts / En 14399-4 Hex Nuts]]>