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Wood screw diameter is measured on the outside of the threads.

Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary.

Slotted round head wood screw diameter


Wood screws, Slotted round head, Zinc plated steel, 3"


See also

Deck screws & Timber screws

Deck screws & Timber screws

Screws for wood to wood fastening applications such as decks, docks and ledgers, etc.