520PCS Kit M3 M4 M5 M6 Stainless Steel Hex Head Button Socket Head Cable Bolts Screws with Nuts Assortment - Sold By VIGRUE (520PCS Kit) Various Screw Sizes:M38,M3 12,M316,M320,M48,M412,M416,M420,M58,M512,M516,M520,M68,M612, M616,M620, to meet different needs. It is a very essential manual tool for the family. With M3, M4, M5 and M6 nuts and washers, installations are now more precise with an increase in the contact surface, which reduces the pressure and protects the parts and screws. Nuts and washers are arranged in a storage box, which makes it easy for you to find the series and avoid the loss when needed. They are anti-oxidant and corrosive even at high temperatures. The main use of the stainless steel hex screw is very common in electronics, electrical appliances, chemicals, water, machinery and equipment, furniture and many other fields. Product Description Material High quality 304 stainless steel. It has good workability and high toughness down to a