US
T.K.Excellent

T.K.Excellent Torx Deck Screws #9 x 2-1/2 Inch

  • Thread Size: #9×2-1/2
  • Item Diameter: 0.2 inches
  • Set Screw Thread Type: Unified National Coarse (UNC)
  • Thread Type: Unc

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A structural exterior wood screw with a corrosion-resistant coating and a splitting-resistant tip, sized for deck framing rather than drywall.

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ASIN: B0CWKKVHDPModel: #9×2-1/2Category: Drywall Screws

Overview

A 395-piece box of T.K.Excellent #9 x 2-1/2 inch deck screws with a Ruspert rust-resistant coating, a torx or star T25 drive, a self-tapping point, and two T25 bits included for exterior wood and structural decking work.

Unlike the drywall screws in this set, this one is built for outdoor structural use: the tan Ruspert coating is meant to hold up to weather where a plain black finish would not, and the tail-cutting tip is shaped to reduce the splitting a plain point can cause near board edges. The torx drive is worth noting too, since it resists cam-out better than a Phillips bit under a driver.

  • #9 x 2-1/2 inch, torx T25 drive
  • Ruspert rust-resistant coating
  • Tail-cutting, self-tapping point
  • 395 screws plus two T25 bits

Who it's for

Suits deck building, fence work, and other exterior wood-to-wood fastening where rust resistance and drive strength matter. Not the right choice for interior drywall or trim work.

Pros and cons

Pros
  • Ruspert coating rated for outdoor rust resistance
  • Torx drive resists cam-out under torque
  • Tail-cutting tip reduces wood splitting
  • Two T25 bits included
Cons
  • Only one size offered, #9 x 2-1/2 inch
  • Not suited to interior drywall work

Performance notes

The self-tapping point removes the need to pre-drill in most cases, and the tail-cutting design behind the tip is meant to clear a path that keeps wood from cracking as the screw drives in. The included T25 bits match the torx or star drive, which keeps six contact points against the driver instead of the two a Phillips bit uses, cutting down on slipping under torque.

Specifications

BrandT.K.Excellent
Model#9×2-1/2
Dimensions & fit
Thread Size#9×2-1/2
Item Diameter0.2 inches
Compatible Groove Diameter2.5 inches
Item Dimensions5.5 × 5.5 × 5.1 inches
Fastener SizeNo. 9
Size Name#9×2-1/2
Construction & materials
Material TypeCarbon Steel
Exterior FinishMetal
ColorBright Yellow
Finish TypesRuspert Coating
Included components
Number Of Packs1
Unit Count395
Number Of Pieces395
Other details
Set Screw Thread TypeUnified National Coarse (UNC)
Thread TypeUnc
Thread StyleRight Hand
Fastener TypeDeck Screws, Wood Screws
Head TypeFlat
Screw Head StyleFlat
Drive SystemTorx
Thread CoverageFully Threaded
Metal TypeCarbon Steel
Thread ClassStandard
Number Of Items395
Part Number#9×2-1/2
Set NameT.K.Excellent 395-Piece #9 X 2-1/2 Inch Deck Screw Set With 2 T-25 Drive Bits
Screw Point StyleType A Point

Frequently asked questions

What drive bit do these screws use?

A torx or star T25 drive, and two T25 bits are included in the box.

Are these rated for outdoor use?

Yes, the Ruspert coating is designed to resist rust and decay in outdoor weather, which fits their intended use as deck screws.

Do I need to pre-drill?

No, the self-tapping point is designed to drive directly into wood without a pilot hole.