A Grade 8 Hex Nut is stronger than other nuts of lower grade by about 25 percent. It has another name too, the Jam Nut. The size varies but ranges from ¼ inch to 2 ½ inches, and you can get different materials, but mainly steel is the most common. For corrosion-resistant Grade 8 Hex Nuts
, you should opt for the zinc yellow-chromate variant.
On the other hand, the zinc-aluminum coated type has higher anti-corrosion resistance than the zinc yellow-chrome plated hex nut. Both are ideal for wet environments. Grade 8 Hex Nuts have a high tensile strength and are commonly used in trucking, mining, and heavy machinery
Other materials include stainless steel, brass, silicon bronze, and nylon. The nut size, which is also its diameter, shows the bolt you should use. For example, if you have a 2 ½ - inch nut, you should use a bolt of a similar size.