Original Posted By: w b evans wbeevans(at)verizon.net
Subject: Pietenpol-List: Re: Grade 8 vs AN INNOCENT GLOBAL 0.0000 1.0000 -4.4912I think I remember reading in the Sacramento Sky Ranch tech book that ANbolts have the threads actually pressed into the bolt vs store bought grade8's that have the threads cut into the bolt shank. Think the tensile,elongation and hardness are the same but this issue of how the threads arecut or pressed is critical for failure. Sky Ranch also has a good sectionon the amount of torque needed to get the bolt to right elongation formaximum clamping without overstressing to failure. Recommend this book toanyone building a homebuilt.Gordon BowenHomer AKOriginal Message:-----------------