Hexagon head bolt ASME B18.2.1 Property Class B Grade: ASTM A307 Certificate : 3.1 acc. EN 10204 UNC TPI 10" TND 0.75" Class2A L=3,5" TL=1,75" 32 pcs. Nut Hex ASME B18.2.2 Grade : ASTM A563 Certificate : 3.1 acc. EN 10204 UNC, Class2B TND 0.75" Hieght 0.665" TPI 10 32 pcs. Note for symbols - TPI : Thread Per Inch - TND : Thread Nominal DIA - TL : Thread Length - L : Lenght Please specify the payment and delivery conditions with delivery date.