Zinc-Plated, Truss Head
Type A (Pointed Tip Screw) & Type B (Blunt Tip Screw).
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
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Type A are a pointed tip screw, and type B are blunt tip screws.
They are the same part #. We have consolidated the ordering chart around the actual part # of 8X1/2-B-TR-PH.