Wood Screw

Wood screws are sharp-pointed fasteners specifically designed for joining wood components in non-structural and structural applications. They feature coarse threads for strong grip and, in most designs, an unthreaded shank near the head that allows the screw to pull wood pieces tightly together during installation. Available in a variety of head styles, drive types, and materials to suit interior, exterior, and load-bearing applications.

Available Types

Type	Description	Drive Styles	Common Applications
Hex Head Wood Screw (DIN 571)	Hexagon head with coarse threads; fully threaded or partial shank options. Also known as hex coach screw	Hex (wrench/socket)	Heavy timber construction, deck framing, outdoor structures
Hex Lag Screw	Heavy-duty wood screw with hex head; larger diameter and longer length than standard wood screws. Replaces 3/8″ lag bolts in many applications	Hex (wrench/socket)	Decks, docks, retaining walls, heavy load-bearing connections
Pan Head Wood Screw	Low-profile head with rounded top and flat bearing surface; distributes load evenly	Phillips, Slotted, Torx, Square	Hinges, hardware attachment, cabinetry, general woodworking
Flat Head Wood Screw	Countersunk 82° head that sits flush with or below the wood surface for a smooth finish	Phillips, Slotted, Torx, Square	Trim work, furniture assembly, flush-mount applications
Round Head Wood Screw	Domed head that sits completely above the workpiece surface; decorative appearance	Phillips, Slotted, Torx, Square	Decorative fastening, visible applications, traditional woodworking
Hex Washer Head Wood Screw	Hex head with integrated washer for increased bearing surface; prevents pull-through	Hex (unslotted), Slotted	Decking, framing, structural connections, pressure-treated lumber

Applicable Standards

Standard	Description
DIN 571:2016	Hexagon head wood screws – metric series. Specifies dimensions and technical requirements for hex head wood screws with thread diameters from 4 mm to 20 mm
ASME B18.2.1	Square, hex, heavy hex, and askew head bolts and hex, heavy hex, hex flange, lobed head, and lag screws (inch series) – covers lag screws and related wood fasteners

Materials

Brass (decorative, corrosion-resistant, non-magnetic)
Stainless Steel (304, 316 for outdoor and marine applications)
Steel with Zinc Plating (moderate corrosion resistance, interior and covered exterior use)

Common Applications