Galvanized cap nut
The galvanized iron cap nut is produced from grades 4.6 and 5.6, both of which are very low carbon grades and are soft. Due to the malleability and easy use of galvanized iron cap nut, they are produced only with coarse ribs. The galvanized iron closed nut is used to cover the part of the iron screw that is outside the work surface. This type of screw does not require a washer and is used on hexagon, Allen and even machine screws. Galvanized iron cap nut in M5 size is widely used, but it is generally produced in M3 organic M24 mm sizes.
