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Carriage bolts, Zinc plated grade 5 steel, Coarse (standard) thread, 18, 3-1/2"

Grade 5 carriage bolt

Carriage bolt diameter is measured on the outside of the threads.

Carriage bolt diameter

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Carriage bolts, Zinc plated grade 5 steel, Coarse (standard) thread, 18, 3-1/2"

Diameter and Thread count