Nut and Washer Assortment, Dimensional Standards ASME B18.2.2, ASME B18.21.1, Hex Type Hex Assortment, Includes Washers Yes, Number of Nuts 177, Number of Thread Sizes 6, Number of Washers 110, Nut Finish Zinc Plated, Nut Material Steel, Nut Type Hex Nut, Standards ASME B18.2.2, ASME B18.21.1, System of Measurement Inch, Thread Sizes #10, #10-24, #8, #8-32, 1/4 In., 1/4 In.-20