#10 x 3.5 Stainless Steel Deck Screws, 100 PCS - Durable Outdoor

In this review the #10 x 3.5 stainless steel deck screws are evaluated for homeowners and tradespeople who need reliable outdoor fasteners. The biggest reason to buy is the use of 304 stainless steel, which delivers persistent corrosion resistance for exposed woodwork; this makes the screws a sensible choice for projects that will face weather and moisture. The included T25 star drive bit and Type 17 point aim to speed installation and reduce cam out, so the pack targets both DIYers and professionals who value durability and a tidy finish.

Key Features

• 304 stainless steel: Provides long-lasting corrosion resistance for outdoor projects like decks and docks.
• #10 x 3.5 in size: A common length and gauge that penetrates hardwoods and softwoods while providing strong hold.
• T25 star drive bit included: Ensures compatibility with the screws and helps prevent slippage when driving.
• Type 17 sharp point: Makes starting and threading into pressure-treated lumber easier and reduces pre-drilling in many cases.
• Flat head with nibs: Leaves a flush surface and helps seat the screw tightly into trim and decking boards.
• Reusable storage box: Keeps the 100-piece pack organized on the job and protects the screws between uses.

Who It's For

The screws are best for homeowners, deck builders, and carpenters who work on outdoor wood structures such as fences, benches, picnic tables, and boardwalks and need corrosion resistance and clean finishing. The combination of 304 stainless and a star drive is practical for projects exposed to rain, salt air, or seasonal moisture.

Those who frequently drive screws into extremely dense exotic hardwoods or who expect heavy breakage under high-torque pneumatic tools should consider specialty fasteners rated specifically for those environments; occasional reports of breakability and stripping suggest careful pilot hole planning may be wise for very hard applications.

Pros & Cons

Pros

• High corrosion resistance from 304 stainless steel keeps fasteners looking good and performing outdoors.
• T25 star drive reduces cam out compared with slotted or Phillips heads for cleaner installation.
• Type 17 point and flat head design help with starting and achieving a flush finish in common lumber types.
• Comes in a sturdy, reusable box for easy storage and transport.

Cons

• Some users report screws can strip or break when forced into very hard material without pilot holes or using excessive torque.

Specifications

Brand	FM FASTENMON
Size	#10 x 3.5 in
Material	304 stainless steel
Pack quantity	100 pieces
Drive type	T25 star drive (bit included)
Point type	Type 17 sharp point
Weight	Approximately 1.8 lbs

Our Verdict

These #10 x 3.5 stainless steel deck screws are a solid, value-minded choice for outdoor woodworking where corrosion resistance and a neat finish matter. They are suited to most common decking, fence, and millwork tasks; just plan pilot holes or moderate torque for very hard woods to avoid stripping. For the price, the included bit and reusable box add practical value for both pros and DIYers.

Frequently Asked Questions

Are these screws suitable for pressure-treated lumber?
Yes, the 304 stainless construction is compatible with ACQ, CA, and CCA pressure-treated lumber and resists staining and corrosion.

Is the T25 bit included a full-size driver bit?
The pack includes a T25 star drive bit to fit the screws for immediate use with compatible drivers.

Will these screws work in hardwoods without pilot holes?
The Type 17 point aids penetration, but for very dense hardwoods pilot holes or reduced torque are recommended to avoid breakage or stripping.