Course Thread - Phosphate & Oil Coating - Grade 8. Auveco flange bolts and locknuts form a strong, dependable fastening system that substantially cuts truck assembly maintenance and repair costs. The flange bolts are made to IFI 111 industry standard specifications and when used in conjunction with the flange locknuts, form a 150,000 P.S.I. tensile strength fastening system, equivalent to SAE J429, Grade 8 industry specification. Flat washers and lock washers are not needed with the flange bolts. Also, our flange fastening system reduces the need for costly hole preparations such as deburring and countersinking.
