Deck screws resist rust and corrosion to hold outdoor decking materials together. drywall screws have fine tips, coarse threads, and tapered bugle heads to penetrate drywall and grip wood without damaging material. hex-head bolts, cap screws, and lag screws are driven with wrenches rather than screwdrivers or …
Jun 08, 2018 · however, as you can see in the following table, both tension and shear are higher in grade 8 bolts over grade 5 bolts; in fact over 21% higher in shear and 25% in tension. the same is true in metric when comparing 8.8 vs 10.9. to be fair, the higher the grade of bolt, the harder it becomes as rated by the rockwell scale.
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