The surface of the SAE J 483 acorn cap nuts generally needs to be treated, including some surface treatment processes such as zinc plating, nickel plating, chrome plating, and dacromet to make it more rust-proof and improve the service life of fasteners. In these surface treatment processes, medium chrome plating is the best process. The acorn head nuts produced by chrome plating not only have a smooth and bright surface but also have a longer anti-rust and anti-corrosion time, which is comparable to stainless steel.
SAE J 483 - 2006 Hexagon Acorn Nuts
Legend | Making: |
P=pitch | Surface:BLK,ZP,HDG,etc |
K=height of the nut | |
D=the nominal diameter of the thread | |
E=The length of the diagonal | |
S=The length of the flat |