Grade 8 hex bolts are made from medium carbon alloy steel and heat treated. A Grade 8 hex bolt has a greater tensile strength than a Grade 5 and Grade 2 hex bolt. They are designed for use in high stress applications. The length of a hex bolt is determined by measuring from under the head of the bolt to the base of the threads.
|Head Style:||Hex||Socket Size:||1-7/8|
|Proof Load, Lb.:||128,800||Tensile Strength, Lb.:||161,000|
SAE J429 Proof Load and Tensile Strength Requirements Above
Length is Measured from Under the Head to the Bottom of the Bolt