VIGRUE 520 Pieces M3 M4 M5 M6 Screws Set, Carbon Steel Black and Nuts Washers Set Round Button Head Allen with Wrench Thread

【Screw material】: The small M3 M4 M5 M6 screw set carbon steel is made of carbon steel of grade 10.9, which is much harder than stainless steel. Black surface treatment, oxidation protection, corrosion resistant, acid and alkali resistant and high hardness. Easy to use: With this product, you no longer have to go to the hardware store. The nut can expand the contact surface, reduce pressure and protect the screw and parts. The hexagonal steel thread is even, smooth and firm, not easy to deform and slide during the working process and fits perfectly with the nut Screw package: Each product comes with a sturdy, transparent case for storage, a sticker for quickly finding the required model and removable insert to adapt to other tools. The screws come with 4-piece wrenches, also known as Allen keys, which perfectly fit our M3, M4, M5, M6 screws. Wide application: pan head screw hexagon socket screws are suitable for door handles, knobs and lamps of various mechanical accessories for minor repairs in shops, garages or homes; as well as various precision machines, electronic products, household appliances, sorting instruments, 3D printer components, automotive, industrial machinery, construction, intelligent household appliances, etc. Why VIGRUE? VIGRUE is a recognised European fitting brand with its own teams for research and development, sales and customer service. Every product that leaves our factory is rigorously tested and is suitable for both industrial and domestic use. Thanks to our many years of experience in the market, we are a leader in the hardware industry. Whenever you need us, please contact us by email or Q&A, we will give you professional service and reply you within 12 hours