Grip-Rite L158STT5 PrimeGuard Plus #8 x 1-5/8ft Wood Deck Screw

In this review the Grip-Rite L158STT5 PrimeGuard Plus #8 x 1-5/8' wood-to-wood deck screw is evaluated for DIYers and professional carpenters needing a weather-resistant, self-starting fastener. The single biggest reason to buy is its combination of a corrosion-resistant coating and a self-starting Type 17 point, which together reduce prep work and deliver long-term exterior performance. The review focuses on build quality, ease of use, and whether these screws offer reliable value for common deck and exterior wood projects.

Key Features

• PrimeGuard Plus coating: Provides corrosion protection for exterior applications so fasteners last longer in outdoor environments.
• Type 17 point: Self starting design reduces the need to pre-drill and helps prevent wood-splitting during installation.
• Bugle head: Ensures a smooth, flush finish so heads sit neatly in the wood without tearing surface material.
• Star drive with T-25 bit: Six-sided drive quickly engages the bit and reduces slippage for faster, cleaner driving.
• Coarse threads: Superior grip into wood provides a solid, tight connection that holds decking and framing securely.

Who It's For

These screws are best for homeowners doing deck repairs, fence building, or exterior wood projects and for professionals who need a dependable, corrosion-resistant fastener that installs quickly. The self-starting point and included T-25 bit make them especially useful for common decking materials and retrofit jobs where speed matters.

Those working with very hard or engineered woods who demand longer, specialized fasteners or stainless steel corrosion resistance should look elsewhere; the PrimeGuard Plus coating offers strong protection for many outdoor uses but is not the same as stainless in extremely corrosive marine conditions.

Pros & Cons

Pros

• PrimeGuard Plus coating gives solid weather resistance for exterior use.
• Type 17 point and included T-25 bit speed up installation and reduce splitting.
• Bugle head and coarse threads produce a clean finish and strong hold in wood.
• Good overall value and durability noted by users who tested them in routine DIY tasks.

Cons

• Sizing received mixed feedback, so confirm length and head style for a given job before buying in bulk.
• Not stainless steel, so in extreme marine environments a different material may be preferable.

Specifications

Brand	Grip-Rite
Model	L158STT5 PrimeGuard Plus
Size	#8 x 1-5/8' (wood to wood)
Coating	PrimeGuard Plus weather-resistant coating
Point	Type 17 self-starting point
Drive	Star drive (T-25 bit included)
Head	Bugle head

Our Verdict

The Grip-Rite L158STT5 PrimeGuard Plus #8 x 1-5/8' screw is a practical, cost-effective choice for most deck and exterior woodwork where weather resistance and quick installation matter. Its combination of a self-starting point, star drive, and protective coating offers strong value for DIYers and pros doing typical outdoor projects, though those needing stainless performance should choose a different alloy.

Frequently Asked Questions

Are these screws suitable for exterior decking?
Yes. The PrimeGuard Plus coating provides corrosion protection intended for exterior applications such as decks and fences.

Do they require pre-drilling?
Not usually. The Type 17 self-starting point reduces the need to pre-drill in most soft to medium-density woods, and helps prevent splitting.

Is the T-25 bit included?
Yes. A T-25 bit is included to match the six-sided star drive for quick engagement and reduced cam-out.