Can I use regular screws on a deck?

No, regular screws will corrode in treated lumber and outdoor conditions. Use ACQ-compatible coated or stainless deck screws.

How many deck screws do I need?

Approximately 350 screws per 100 sq ft of decking using two screws per joist.

Deck ScrewsGenerating image…

Hardware & Fasteners

Screws

Budget: $25-$40/lb box (coated steel) | Mid-range: $40-$65/lb box (premium coated) | Premium: $60-$120/lb box (stainless steel)

Deck Screws: Corrosion-Resistant Exterior Screws for Decking (2026)

Prepared by Lumberama's Building Materials Team

|Last updated May 25, 2026|Sources & methodology

Deck screws are exterior-rated fasteners designed to withstand weather, moisture, and the corrosive chemicals in pressure-treated lumber. They feature coatings or stainless steel construction to resist rust, and aggressive threads for strong holding power in softwood decking. Star-drive heads are now preferred over Phillips.

Key Features

Corrosion-resistant coatings or stainless steel; Star (Torx) drive resists cam-out; Aggressive threads for treated lumber; Self-drilling tips reduce splitting; Compatible with ACQ-treated wood

Specifications

Sizes: #8 x 2-1/2"

#8 x 3"

#10 x 3"

#10 x 3-1/2" | Material: coated steel or 305/316 stainless | Drive: T-20

T-25 star | Thread: coarse

type 17 point | Coating: polymer

ceramic

or hot-dipped galvanized

Applications

Deck board attachment to joists; Railing and baluster installation; Outdoor furniture assembly; Fence construction; Pressure-treated lumber projects

Installation Overview

Pre-drill near board ends to prevent splitting. Drive screws flush with deck surface - do not overdrive. Use two screws per joist per board. Space screws 1 inch from board edges. Use appropriate driver bit for star drive head.

Pros & Cons

Pros

✓ Weather and corrosion resistant; Star drive eliminates cam-out; Removable for board replacement; Strong holding power in softwood

Cons

✗ More expensive than interior screws; Stainless steel is costly; Can split boards without pre-drilling; Visible on deck surface

Top Brands

GRK

SPAX

Deckmate

Code Requirements

Must be compatible with ACQ/CA-C treated lumber per IRC. Hot-dipped galvanized or stainless steel required for treated lumber connections. Must meet corrosion resistance standards per fastener manufacturer.

Buying Tips

Use star-drive screws to eliminate stripped heads and cam-out frustration; Pre-drill near board ends to prevent splitting; Buy 10-15% more than estimated to account for waste and extras