Product Description
OZCO® OWT™ Hammered Dome Cap Nuts — Packs of 10 or 250 (with Threaded Washers)
- Finish & Protect — Conceals exposed screw heads and threads with a rounded, hammered look
- Ready to Use — Each pack includes matching threaded washers that the caps screw onto for a secure fit
- Outdoor-Ready — Powder-coated, aircraft-grade aluminum; approved for use with ACQ-treated lumber
- OWT System Match — Complements OZCO Post Bases, Post-to-Beam brackets, rail saddles, and accents across Ironwood & Laredo Sunset styles
- Choice of Quantities — Order a 10-pack for small projects or a 250-pack for crew and contractor stocking
Add the clean, finished look your clients expect. Hammered Dome Cap Nuts twist onto the included threaded washers to cover fastener heads and threads, delivering a secure, tamper-resistant accent that matches the OZCO OWT hardware family. Built from powder-coated aluminum and approved for modern pressure-treated lumber, these caps are a durable finishing touch for pergolas, pavilions, decks, and decorative fence details.
Why Choose This
- Professional finish — Hides hardware while matching OWT textures and geometry
- Simple install — Cap threads onto the included washer after you set your screw/bolt
- Built for weather — Corrosion-resistant coating; ACQ-compatible materials
Specifications
| Option | 10-Pack | 250-Pack |
| OZCO Item # | 56622 | 16622 |
| Kit Contents | (10) Hammered Dome Caps & (10) Threaded Washers | (250) Hammered Dome Caps & (250) Threaded Washers |
| Overall Diameter | 1.22″ | |
| Overall Height | 0.60″ | |
| Material / Finish | Aircraft-grade aluminum, black powder coat | |
| Treated Lumber | Approved for ACQ-treated lumber | |
| Typical Usage | Pergolas, pavilions, decks, porch rails, decorative fence details; anywhere OWT fasteners are visible | |
Installation
Drive your OWT fastener. Slip the threaded washer over the protruding screw/bolt shank, then thread the Hammered Dome Cap onto the washer until snug. Do not over-tighten. Verify all critical structural connections meet local code and engineering requirements.
Buying Guide
- Pack size: Choose 10-pack (56622) for small jobs or 250-pack (16622) for larger builds and stocking.
- Match your hardware: Pair with OWT 1/4″ Timber Screws where screw heads will be visible, or use OWT Hex Cap Nuts if you prefer a flatter, faceted look.
- Coordinate components: Keep the aesthetic consistent with Laredo Sunset Post-to-Beam Brackets or matching Ironwood components on the same project.
Frequently Asked Questions
- Do these include the threaded washers?
- Yes. Each pack ships with matching threaded washers (10 or 250, to match your pack).
- Are they compatible with pressure-treated lumber?
- Yes. The materials and coating are approved for use with ACQ-treated lumber.
- What size are the caps?
- The cap measures about 1.22″ in diameter and 0.60″ tall.
- Where should I use them?
- Anywhere you want to conceal visible fasteners on OWT brackets—post bases, rail saddles, rafter clips, and similar connections.
Comparison
- Hammered Dome Cap (this item): Rounded, hammered profile; classic OWT accent that fully conceals fastener ends.
- OWT Hex Cap Nuts: Flatter, faceted look that pairs tightly with the OWT aesthetic where a lower-profile cap is preferred.
- No cap: Lowest cost and fastest, but leaves fasteners exposed and easier to tamper with.
Need help matching caps to your brackets and screw lengths? Contact us—we’ll help you kit a complete OWT package for a clean, cohesive build.
