Description:Carefully selected material enables these nuts to have high hardness and corrosion resistance, and since there are hex nuts and flange nuts, this nut set can meet your different fastening needs.Since these nuts adopt the exquisite and excellent workmanship, they have the features of neat, uniform and burr-free, which can make them bear the force evenly and not easy to slip.These nuts are mainly made of 304 stainless steel, which is rust-proof and sturdy.The length of this set is 19.5cm, the width is 13cm and the height of it is 3.6cm.This set is suitable for mechanical joint, manufacturing industry, daily maintenance and so on.Item Name: Hex Nuts/Flange NutsMaterial: 304 Stainless SteelSpecification: 3/8-16, 5/16-18, 1/4-20 (Thread Diameter-Number of Threads per inch)Measurement System: US TypeSize Details: 19.5cm x 13cm x 3.6cm/7.68" x 5.12" x 1.42" (Approx.)Notes:The quantity is about 160pcs, due to manual calculation, the quantity might has 1-5pcs 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:60 x Hex Nuts (20 x 3/8-16 Hex Nuts, 20 x 5/16-18 Hex Nuts, 20 x 1/4-20 Hex Nuts)100 x Flange Nuts (20 x 3/8-16 Flange Nuts, 30 x 5/16-18 Flange Nuts, 50 x 1/4-20 Flange Nuts)