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Wood screws, Flat

Flat head wood screw

Wood screws have large threads for use in wood.

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.

Wood screws, Flat

Phillips flat head

Phillips flat head

Flat heads are countersunk (cone shaped under the head) with a flat top. Phillips drive is x-shaped for installation with a Phillips screw driver.

Frearson flat head

Frearson flat head

Flat heads are countersunk (cone shaped under the head) with a flat top. Frearson drive is x-shaped, similar to (but not compatible with) Phillips.

Slotted flat head

Slotted flat head

Flat heads are countersunk (cone shaped under the head) with a flat top. Slotted drive has a simple slot for a flat bladed screw driver.

Square flat head nibs

Square flat head w/ nibs, type 17

Type 17 screws have an auger point. Countersinking nibs aid in material removal. Flat heads are countersunk (cone shaped under the head) with a flat top. Square drive is designed to reduce the risk of cam-out (stripping) and allow single-handed installation.

See also

Sheet metal screw

Sheet metal screws

Screws with large threads for use in sheet metal sometimes also used in plastic, fiberglass or wood.

Deck screws & Timber screws

Deck screws & Timber screws

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