2-1/4", US, Phillips

US Fasteners

Wood screw

Wood screws

Screws with a smooth shank and tapered point for use in wood.
Machine screw

Machine screws

Screws with machine threads for use with a nut or in a tapped hole.
Drywall screws

Drywall screws

Construction screws intended for fastening drywall sheets to studs.
Anchors

Anchoring products

Fasteners for anchoring in stone, concrete, brick, and drywall, etc.