Hello, may somebody help how designate hex bolt. Our previous designation of hex bolt was Bolt B1821 AH 025 C 100 N, but now I read a standard ASME B18.2.1-2010 and foundd a fact, that bolt must designated as Square Bolt per ASME B18.2.1, 3⁄8 – 16 11⁄2. Steel per ASTM A 307 Grade A, Zinc plated...