✔ High quality 304 stainless steel. Stainless steel is a common material with a density of 7.93 g/cm3. It has good workability and high toughness up to a temperature of about 800 degrees. ✔ Different screw sizes: to meet different needs. It is a very essential manual tool for the family. ✔ With nuts and washers installations are now more precise with an increase in the contact surface, which reduces pressure and protects parts and screws. ✔ The nuts and washers are arranged in a storage box, which makes it easy to find your way around the series and avoid loss when needed. ✔ They are anti-oxidizable and corrosive even at high temperatures. The main use of stainless steel hex screw is very common in electronics, electrical appliances, chemicals, water, machinery and equipment, furniture and many other fields.