Can roll threaded bolts with a reduced body diameter be used with shear plate timber connectors?

No. According to Section 12.1.3.3 of the American Wood Council’s National Design Specification for Wood Construction, a bolt with a full body diameter must be used with shear plates.

12.1.3.3 Bolts used with split ring and shear plate connectors shall conform to 11.1.3. The bolt shall have an unreduced nominal or shank (body) diameter in accordance with ANSI/ASME Standard B18.2.1 (Reference 7).

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