#10 x 2 1/2 in 316 Stainless Steel Screws 350 Pack - Marine Grade

In this review of the #10 x 2 1/2 in 316 Stainless Steel Screws, the bottom line is simple: these are for builders and homeowners who need corrosion-resistant fasteners for coastal or wet environments. The pack of 350 with a T25 Star driver bit targets projects where longevity matters most, such as decking, docks, and exterior furniture. The reviewer found the 316 marine grade steel and star Torx head to be the single biggest reasons to buy, since they reduce rust staining and head stripping over long service life.

Key Features

• 316 Marine Grade Stainless: Provides superior corrosion resistance to prevent rust streaks and preserve the look of outdoor timber over years.
• 350 Pack: A large quantity that suits medium to large projects without frequent reordering, reducing downtime on job sites.
• T25 Star Torx Driver Included: The star drive reduces cam-out and head rounding for cleaner installation and fewer damaged screw heads.
• Type 17 Point: A sharp point and under-head nibs help seat the screw and reduce splitting when used with pilot holes.
• Versatile for Wood Types: Works well with hardwoods, softwoods, and pressure-treated lumber like redwood and cedar for decking, fencing, and framing.
• Burnished Finish: A clean, shiny look that minimizes visible staining on finished timber projects.

Who It's For

These screws are aimed at contractors, boat builders, and homeowners working on coastal or high-humidity projects who need durable, rust-resistant fasteners. If you build docks, balustrades, jetties, or outdoor decking and want screws that resist saltwater corrosion, this 316 stainless option is appropriate and reliable.

Those who should look elsewhere include buyers on extremely tight budgets where coated screws suffice for short-term use, or users who need self-drilling screws for metal-to-metal fastening, since these are wood screws meant to be used with pilot holes for best results.

Pros & Cons

Pros

• Excellent corrosion resistance from 316 stainless steel, ideal for coastal and marine exposure.
• The included T25 star driver reduces cam-out and helps maintain screw head integrity during installation.
• Large 350 count offers good value for medium to large exterior wood projects.
• Works across hardwoods, softwoods, and pressure-treated lumber for versatile use.

Cons

• Not self-drilling; pilot holes are recommended to avoid splitting and to ease drive effort.
• A small number of customers reported breakage during installation, suggesting care with torque and predrilling on dense hardwoods.

Specifications

Size	#10 x 2 1/2 in
Material	316 Marine Grade Stainless Steel
Pack Quantity	350 screws plus T25 star driver
Drive Type	T25 Star Torx
Tip	Type 17 point (sharp, for wood; pilot holes recommended)
Finish	Burnished shiny finish

Our Verdict

For anyone building in coastal or wet conditions who values longevity and appearance, these 316 stainless wood screws are a sensible investment and good value for medium-to-large projects. They deliver reliable corrosion protection and installation performance when used with pilot holes, though buyers should respect torque and predrill in dense hardwoods to avoid occasional breakage.

Frequently Asked Questions

Are these screws suitable for saltwater exposure?
Yes, the 316 stainless steel formulation is specifically recommended for coastal, wet, and marine applications to resist saltwater corrosion.

Do these screws require pilot holes?
They have a Type 17 point and are sharp, but they are not self-drilling; pilot holes are advised to prevent wood splitting and reduce driving torque.

Is a driver bit included?
Yes, a T25 star Torx driver bit is included to reduce cam-out and help preserve the screw head during installation.