This assortment contains 5,170 pieces of the most popular sizes of Grade 8 Coarse Thread lock washers, flat washers, hex cap screws, hex nuts and nylon locknuts. Two 40-compartment steel gray bins are included for easy storage (each bin dimension is 33-3/4 x 6-1/2 x 22-1/4 inches). Every part is individually bagged and printed with a clear description and quantity. Bin labels with part sizes come with each assortment. These labels go on the steel bin so you can organize accordingly.