Description:Premium materials and fine workmanship make these nuts practical with high hardness, which is not easy to deform.The surface of nuts is flat and smooth without burrs, making your work easy and efficient. And the sturdy construction provides long service life. With clear and neat thread, these nuts ensure even force and are not easy to loose.With 304 stainless steel material, the hex nuts are strong and durable.The box is 17.6cm long, 10.2cm wide and 2.3cm high.It is commonly used in auto repairs, electronic products, mechanical equipment, electrical appliances, furniture and other fields. Ideal for use by a variety of workers and repairmen.Item Name: Hex NutMaterial: 304 Stainless SteelSpecification: American System: 2 -56, 4 -40, 6 -32, 8 -32, 10 -24, 12 -24, 1/4-20, 5/16-18, 3/8-16 (Nominal Diameter-Number of Threads per inch)Size Details: Box Size: 17.6cm x 10.2cm x 2.3cm/6.93" x 4.02" x 0.91" (Approx.)Notes:The quantity is about 280pcs, due to manual calculation, the quantity might has 1-3pcs more or less, hope you can understand, thank you.Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:50 x 2 -56 Hex Nuts40 x 4 -40 Hex Nuts40 x 6 -32 Hex Nuts40 x 8 -32 Hex Nuts30 x 10 -24 Hex Nuts25 x 12 -24 Hex Nuts20 x 1/4-20 Hex Nuts20 x 5/16-18 Hex Nuts15 x 3/8-16 Hex Nuts