We supplied approximately 21,000 pieces of these custom grade 5 lug nuts to our customer, manufactured using medium carbon steel material with zinc clear finish. Blue thread lock patch was applied at 360 degrees across the length of internal thread per customer specifications. An 82 degree angle was maintained at the cone side and .500" width across the flats. Overall length (height) of the lug nut was also set to .500". Full certs were available with the parts.