Product Description
OWT™ 1/4″ Timber Screws by OZCO® — Washer-Head, 3/8″ Hex, ACQ-Approved (Multiple Lengths)
- One Driver Across OWT — Built-in washer head with a 3/8″ hex keeps driver swaps to a minimum across OWT hardware
- No Pre-Drilling — Sharp point and cutting threads bite fast to help reduce splitting in most softwoods
- Outdoor-Tough Coating — Corrosion-resistant finish is approved for ACQ-treated lumber and exterior use
- Clean, Finished Look — Wide washer head seats firmly and pairs well with OWT Hex Cap Nuts on visible faces
- Range of Lengths — Common sizes from 1-3/4″ to 12″ cover light trim-ups to deep structural fastening
OWT 1/4″ Timber Screws are the go-to fasteners for OZCO Ornamental Wood Ties. The integrated washer head spreads load and looks sharp, while the standardized 3/8″ hex head matches other OWT fasteners for a simple, one-driver workflow. A durable exterior coating and ACQ approval make these a natural fit for pergolas, pavilions, decks, porch rails, and decorative fence details. Choose the length that matches your connection—shorter screws for brackets and saddles, longer screws for post/beam penetrations and thicker assemblies.
Why Choose This
- Speed & consistency — Same 3/8″ hex head used across OWT screws/bolts
- Strong hold — Aggressive thread pattern with wide bearing washer head
- Built for weather — Exterior coating stands up to the elements; ACQ-compatible
Specifications
| Head / Drive | Integrated washer head, 3/8″ hex | ||
| Diameter | 1/4″ | ||
| Coating / Use | Exterior corrosion-resistant coating; ACQ-approved; no pre-drill in most applications | ||
| Common Lengths | 1-3/4″ (56625) | 3-3/4″ (56627) | 5-3/4″–12″ (assorted: 56647 10″, 1/4″ × 12″, etc.) |
| Typical Pack Options | 25 pcs (short to mid lengths) | 10 pcs (long lengths 10–12″) | Bulk (select lengths, e.g., 50/250/1000 pcs) |
| Typical Applications | OWT post bases, rail saddles, rafter clips, post-to-beam brackets; pergolas, decks, pavilions, decorative fence details | ||
Installation
Use a 3/8″ hex driver. Align components, drive the screw until the washer head seats flush, and avoid over-torquing on softer woods. For long lengths (10–12″), pre-check pilot feasibility in dense species. Always fasten into sound lumber and follow local code/engineering for spans, loads, and fastener embedment.
Buying Guide
- Match length to embedment: Aim for at least 1-1/2″–2″ of bite into the receiving member where practical.
- Finish the look: On exposed faces, pair with OWT Hex Cap Nuts to conceal screw heads.
- Mix with OWT brackets: These are the screws included with many OWT connectors—keep extras for Post-to-Beam Brackets and 2×4 Top Rail Saddles.
Frequently Asked Questions
- Do I need to pre-drill?
- Not typically—these are designed to drive without a pilot in most softwoods. For dense or brittle species, a small pilot can help.
- Are these okay with pressure-treated lumber?
- Yes. The coating is approved for modern ACQ-treated lumber.
- What driver should I use?
- A 3/8″ hex socket/bit fits the integrated washer head.
- Which length should I choose?
- Select a length that provides adequate embedment after accounting for hardware thickness and member overlap.
Comparison
- OWT 1/4″ Timber Screws (this item): Washer-head, 3/8″ hex, exterior-coated, ACQ-approved; lengths 1-3/4″ to 12″.
- OWT Timber Bolts (1/2″): Through-bolt look and clamping force for heavy joints and long spans.
- Generic exterior screws: Lower cost but usually mixed head styles/coatings and less cohesive with OWT hardware.
Need help choosing lengths and counts for your brackets? Contact us and we’ll help you kit a complete OWT package.
