B18.2.1 bolt designation

[usa_faggot]

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 per ASTM F 1941 Fe/Zn 3A (2.11). I'm 100 percent sure that I didn't smoke when added bolt to PDM with designation "B1821 AH 025 C 100 N", but why I can't find this type of designation it now? Could anybody explain this difference in hex bolt designation, and maybe somebody could point where I may find "old" designation.

 

[pylfrm]

777xavier777,

Have you checked ASME B18.24?


pylfrm