3-1/2", Zinc plated steel

US Fasteners

Wood screw

Wood screws

Screws with a smooth shank and tapered point for use in wood.
Hex bolt

Hex bolts

Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.
Machine screw

Machine screws

Screws with machine threads for use with a nut or in a tapped hole.
Carriage bolt

Carriage bolts & Plow bolts

Bolts with no drive, and machine threads for use with a nut.
Lag bolt

Lag bolts

Large wood screws technically called lag screws.
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.
Eye bolts

Eye bolts & Screw eyes

Bolts or screws with a circular ring on the head.