High quality 304 stainless steel. Stainless steel is a common material with a density of 7.93 g/cm3, also known as 18/8. It has good workability and high toughness up to a temperature of about 800 degrees. Various screw sizes: M2x4 - M2x20, M3x4 - M3x30, M4x6 - M4x30, to meet different needs. It is a very essential hand tool for the family. With M2, M3 and M4 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 allows you to easily find the series and avoid loss when needed. They are anti-oxidizing 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. Material 304 High quality stainless steel. It has good workability and high toughness up to a temperature of about 800 degrees.