10 x 3-1/2 in Exterior Bronze Star Truss Head Wood Screws - Case

In this review the focus is on a heavy-use, high-volume option for contractors and serious DIYers: the 10 x 3-1/2 in exterior coated modified truss head wood screw in a case quantity of 2,268. The bottom line is simple - these screws are built for long-term exterior performance and strong hold, so if you need a large supply for decking, cabinetry, or structural wood joins, they deliver consistent strength and corrosion resistance thanks to a triple layer ACQ compatible bronze coating and heat-treated steel construction.

Key Features

• Triple layer bronze coating: Provides ACQ compatibility for exterior use and prolonged corrosion resistance on treated lumber.
• Salt spray proven: Screws passed 1,200 hours of salt spray testing without coating or screw failure, indicating durability in harsh environments.
• Modified truss washer head: Offers high compression strength and a broad bearing surface to pull materials tight without sinking or splitting.
• T-25 Torx star drive: Deep six-lobe recess reduces cam-out and speeds assembly with high torque drivers.
• Type 17 notched point: Sharp, notched point quickly starts and cuts clean through wood to reduce the need for pre-drilling.
• Heat-treated steel: Ensures high tensile and shear strength for structural fastening and repeatable performance.

Who It's For

These screws are aimed at professional builders, deck contractors, and serious woodworkers who buy fasteners in bulk and need reliable exterior performance. The case quantity of 2,268 makes them especially suitable for large projects like multi-deck jobs, commercial framing, or a shop stocking up to avoid frequent reorders.

Casual homeowners or weekend hobbyists who only need a few dozen screws may find this case size excessive and should consider smaller packs. Also, if a stainless finish is required for the most corrosive coastal applications, a dedicated stainless fastener might be preferable despite the strong salt spray results here.

Pros & Cons

Pros

• Excellent holding power with deep, wide threads that cut clean and resist pullout.
• Durable triple layer bronze coating proved by extensive salt spray testing for exterior use.
• Star drive and Type 17 point speed installation and reduce wood splitting in face frame and board applications.
• Large case quantity offers clear value for contractors and high-volume users.

Cons

• Case quantity is excessive for small projects or occasional users who do not need thousands of screws.
• Torx T-25 requires a compatible driver; not all basic toolkits include this bit.

Specifications

Size	10 x 3-1/2 in
Shaft diameter	0.19 in
Head diameter	0.145 in
Head style	Modified truss washer head
Drive	T-25 Torx (six-lobe star)
Coating	Triple layer ACQ compatible bronze coating
Package quantity	Case: 42 boxes, 2,268 screws

Our Verdict

For professionals and high-volume DIYers the screws represent a practical choice: they combine strong mechanical performance, proven corrosion resistance, and time-saving features like the Type 17 point and Torx drive. The large case quantity delivers value per screw, making this a smart buy for decks, cabinetry, and repeated exterior work where long-term hold and ACQ compatibility matter.

Frequently Asked Questions

Are these screws suitable for treated lumber?
Yes, the triple layer bronze coating is ACQ compatible and intended for use on treated lumber and exterior applications.

What driver bit do these require?
They use a T-25 Torx (six-lobe star) driver; using the correct bit reduces cam-out and speeds installation.

Is pre-drilling necessary?
The Type 17 notched point provides quick starts and often eliminates the need for pre-drilling in many wood applications, though hardwoods may still benefit from pilot holes.