Technical Design Information

As Portland Bolt does not have any architects or engineers on staff, we are unable to provide technical assistance as to which timber connector should be used.  Since no ASTM specification cover split rings, the best place to go is the American Wood Council, specifically the National Design Specification for Wood Construction

ASTM Specifications Related to Split Rings

• A153 (Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware): Both 4” and 2-1/2” are available in plain finish and hot-dip galvanized.