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RE: Galvanizing High Strength Bolts

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Title: RE: Galvanizing High Strength Bolts

Galvanizing is prohibitted for ASTM A490 high-strength bolts due to hydrogen embrittlement concerns. Galvanizing is permitted (hot-dip and mechanical) for ASTM A325 high-strength bolts. Hot-dip galvanizing would be done per ASTM A153. Here is a link to the scope for that spec:

http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/PAGES/A153A153M.htm?L+mystore+imoq3345

Charlie