When it comes to staircase components, the Red Oak 6004S Fillet 5/16” x 1-1/4” stands out as a vital element for achieving structural stability and a polished appearance.
Designed for use in plowed handrails and shoerails, this fillet fills the gaps between square balusters, ensuring both safety and aesthetics. Let’s dive deep into what makes this product indispensable in woodworking and construction projects.
What is the Red Oak 6004S Fillet?

The Red Oak 6004S Fillet is a slender wooden strip, measuring 5/16” in thickness and 1-1/4” in width, crafted specifically for staircase installations. It is made from red oak, a durable and visually appealing hardwood. This fillet is used to fill the plow grooves in handrails and shoerails, securing balusters in place while enhancing the overall look of the staircase.
Why Choose Red Oak for Stair Fillets?
Red oak is a popular choice for woodworking due to its strength, durability, and attractive grain pattern. It can withstand wear and tear, making it ideal for high-traffic areas like staircases. Additionally, its natural beauty is easily enhanced with stains and finishes, allowing for seamless integration into various design styles, from traditional to modern.
Dimensions and Specifications
Feature | Details |
---|---|
Thickness | 5/16 inches |
Width | 1-1/4 inches |
Material | Red Oak |
Applications | Staircase handrails and shoerails |
These precise dimensions ensure compatibility with standard plowed rails, simplifying the installation process.
Benefits of Using Red Oak 6004S Fillet

- Durability: Red oak is known for its exceptional strength and resistance to damage, ensuring the fillet lasts for years.
- Versatility: Its natural grain and color can be stained or finished to match other staircase components.
- Ease of Installation: The 6004S fillet is easy to cut and fit, making it ideal for DIY enthusiasts and professionals alike.
- Cost-Effectiveness: Despite its premium quality, red oak fillets are affordable compared to other hardwood options.
How to Install Red Oak 6004S Fillet
Proper installation of the Red Oak 6004S Fillet ensures both functionality and visual appeal. Follow these steps:
- Preparation:
- Measure the length of the plowed rail grooves where the fillet will be installed.
- Clean the rail grooves to remove any debris or dust.
- Cutting the Fillet:
- Use a saw to cut the fillet into smaller pieces that fit snugly between the balusters.
- Securing the Fillet:
- Place each baluster in the plowed groove of the handrail or shoerail.
- Insert the fillet pieces between the balusters, ensuring a tight fit.
- Final Touches:
- Apply wood glue or finish nails to secure the fillet in place.
- Sand and stain the fillet to match the handrail for a seamless look.
Maintenance Tips for Red Oak Fillets

To maintain the longevity and beauty of your Red Oak 6004S Fillet, follow these simple care tips:
- Regular Cleaning: Wipe the fillet with a damp cloth to remove dust and dirt.
- Avoid Excess Moisture: Prevent water exposure to avoid warping or damage.
- Reapply Finishes: Periodically apply a fresh coat of finish to protect the wood from wear.
Comparing Red Oak 6004S Fillet with Other Materials
Feature | Red Oak | Maple | Pine |
---|---|---|---|
Durability | Excellent | Good | Fair |
Aesthetic Appeal | Warm grain, rich tones | Smooth and light | Soft and light |
Cost | Moderate | Higher | Lower |
Where to Buy Red Oak 6004S Fillet
The Red Oak 6004S Fillet 5/16” x 1-1/4” is available through various suppliers:
- Local Retailers: Home improvement stores like Home Depot or Lowe’s often stock red oak fillets.
- Online Stores: Websites such as Amazon or specialist stair part suppliers offer this fillet in different lengths.
- Custom Orders: For bulk purchases or unique sizes, contact a wood mill or manufacturer directly.
Conclusion
The Red Oak 6004S Fillet 5/16” x 1-1/4” is a small but essential component for creating beautiful, stable staircases. Its durability, ease of use, and aesthetic versatility make it a preferred choice for both professionals and DIY enthusiasts.
Whether you’re renovating your staircase or building one from scratch, this fillet ensures a flawless finish that combines safety with style. Choose the Red Oak 6004S Fillet for your next project and enjoy the perfect blend of functionality and elegance.
FAQs About Red Oak 6004S Fillet 5/16” x 1-1/4”
1. Can the Red Oak 6004S Fillet be painted instead of stained?
Yes, the Red Oak 6004S Fillet can be painted. However, due to the natural grain and texture of red oak, many prefer to stain it to enhance its appearance. If painting, use a primer suitable for hardwood to ensure an even finish.
2. How does the Red Oak 6004S Fillet contribute to staircase safety?
The fillet fills the gaps in plowed rails between balusters, securing them in place. This ensures stability, preventing any movement that could compromise the staircase’s safety and durability.
3. Is the Red Oak 6004S Fillet available in pre-cut lengths?
While some suppliers offer pre-cut lengths, most fillets are sold in longer pieces that can be cut to size during installation. This allows flexibility for use in various staircase designs.
4. Can the Red Oak 6004S Fillet be used in outdoor staircases?
While red oak is durable, it is not naturally weather-resistant. If you plan to use the fillet outdoors, treat it with a weatherproof sealant or finish to protect it from moisture and UV damage.
5. Are there eco-friendly options available for the Red Oak 6004S Fillet?
Yes, some manufacturers offer red oak fillets sourced from sustainably managed forests. Look for certifications like FSC (Forest Stewardship Council) to ensure your purchase supports responsible forestry practices.
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