1
Skip to main content

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


Length/Size Price/Each Qty
2'' $ 2.75 1
2 1/2'' $ 3.25 1
3'' $ 3.30 1
3 1/2" $ 4.30 1
4" $ 4.55 1
Length/Size Price/Pkg Qty Qty
2'' $ 55.00 25
2 1/2'' $ 65.00 25
3'' $ 66.25 25
3 1/2" $ 86.25 25
4" $ 91.25 25
Length/Size Price/Case Qty Qty