ZINC PLATED STEEL Self locking nut sizes from M5 to M12 - 1 box for each size Flat washer sizes 6/8/10/12 - 1 box for each size Plain washers large series sizes 6/8/10/12 1 box for each size Hexagon head screws 6X10/ 6 X16/ 8X16 8X60/ 8X140 10X25 /10X50 12X25/ 12X120 /16X40 2/3 boxes for each size Socket cap screws 6X20 10X25 4 boxes for each size Pan head screws 6X20/6X25 4 boxes for each size