5/8"-18 Grade 8 Hex Flange Bolt (Fine Thread)

Hex Washer Head Flange Bolt: This is a one-piece hex-washer head bolt with a flat bearing surface, made of high-alloy steel, face bolt, but with a thick flange bearing surface side.  The flange provides more strength than a standard bolt and eliminates the need for a lock washer or lock nut.  For use on truck frames with Grade 8 Flange Top Lock Nuts.  The length of a hex bolt is determined by measuring from under the head of the bolt to the base of the threads. Grade: Grade 8 Diameter: 5/8 Plating: Plain Thread Count: 18 Material: Steel Thread Length: 1-1/2 Head Style: Hex Flange Socket Size: 15/16 Proof Load, Lb.: 27,100 Tensile Strength, Lb.: 33,900 SAE J429 Proof Load and Tensile Strength Requirements Above Length is Measured from Under the Head to the Bottom of the Bolt Country of Origin varies; Country of Origin is subject to change If plating is important please send an inquiry