The CAP-TOR screw’s reverse threads prevent the mushrooming problem that drives contractors crazy on composite decks. Standard deck screws push composite material up around the screw head, creating unsightly bumps across the deck surface. CAP-TOR’s reverse threads pull that material back down, leaving a clean, professional finish.
This 350-piece contractor pack covers roughly 100 square feet of decking. The #34 Saddle color matches five popular Trex colors plus various browns from Fiberon and Wolf. At #10 gauge and 2-3/4 inches long, these screws handle standard 5/4” composite boards on typical 16” joist spacing.
Technology That Actually Works
The undercut head design slices through capstock cleanly — no tearing, no surface defects, no dimpling. Combined with the reverse thread technology, you get flush screw heads without the typical composite mushrooming. The Type 17 auger tip eliminates pre-drilling except within 1 inch of board ends.
The extra-deep T-20 star drive prevents cam-out and stripping during installation. That matters when you’re driving hundreds of screws per deck. The tri-lobular shank reduces driving torque while maintaining holding power.
| Specification | Value |
|---|---|
| Gauge | #10 |
| Length | 2-3/4 inches (70mm) |
| Material | Carbon steel core |
| Coating | Epoxy (color-matched) |
| Head Design | Undercut |
| Thread Design | Reverse threads |
| Drive Type | T-20 Star Drive |
| Tip | Type 17 auger |
| Pack Size | 350 pieces |
| Coverage | ~100 sq ft |
Color Matching That Matters
The #34 Saddle color matches Trex Saddle, Jasper, Tree House, Ocracoke, and Havana Gold. It also matches Fiberon’s various brown tones and Wolf’s Saddle color. The epoxy coating provides the color match while delivering corrosion resistance.
The epoxy coating offers high corrosion resistance and ACQ approval. That ACQ approval matters in Montana where pressure-treated lumber is standard for deck framing. The coating handles freeze-thaw cycles better than bare steel screws.
Real-World Performance
Professional contractors report positive reception for the clean finish without pre-drilling on many composite brands, with zero negative reports found in search snippets. The screw design specifically targets the problems contractors face with composite decking — mushrooming, surface defects, and color mismatches.
Compared to hidden fasteners, these are easier to install and repair but remain visible on the surface. Compared to stainless steel screws, the epoxy coating is more cost-effective but less durable in marine zones.
For coastal or salt-water environments, the 316 Stainless version is recommended over the epoxy version. Montana contractors working near Flathead Lake or other water bodies should consider conditions when choosing between epoxy and stainless options.
The Verdict
Worth it for contractors installing brown-toned composite decking who want clean results without the mushrooming headaches of standard screws. The reverse thread technology works. The color matching eliminates the connect-the-dots look of mismatched fasteners. The 350-count pack with included T-20 bit covers typical residential deck sections efficiently.
Not the cheapest deck screw option. But for professional results on Trex and similar capstock decking, the CAP-TOR design delivers what it promises — no mushrooming, clean finish, proper color match. Installation requires just a T-20 star drive bit and powered drill, with an optional Smart-Bit Depth Setter for uniform screw depth.
Frequently Asked Questions
What makes CAP-TOR screws different from standard deck screws?
The reverse threads prevent mushrooming by pulling composite material back down instead of pushing it up like standard screws. The undercut head slices through capstock for a clean, professional finish.
Do I need to pre-drill with these screws?
Pilot holes are recommended near board ends within 1 inch, but otherwise not typically required. The Type 17 auger tip handles most composite boards without pre-drilling.
What Trex colors does #34 Saddle match?
The #34 Saddle matches Trex Saddle, Jasper, Tree House, Ocracoke, and Havana Gold, plus various brown tones from Fiberon and Wolf Saddle.
Can these screws handle Montana’s weather conditions?
The epoxy coating offers high corrosion resistance and ACQ approval for use with pressure-treated lumber. The coating handles freeze-thaw cycles well, though for extreme environments the 316 Stainless version is recommended.
What’s included in the 350-piece pack?
The pack includes 350 screws plus one T-20 Star Drive bit. This covers approximately 100 square feet of decking at standard spacing.
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