Fixed Straight Spline for Aluminum Handrail

Name: Fixed Straight Spline for Aluminum Handrail
Brand: Cable Bullet
SKU: HRA-SP-4
Price: 14.5 USD
Availability: InStock
Rating: 4.6 (7 reviews)

SKU HRA-SP-4

Seamlessly connect your aluminum handrail with hidden, internal splines.

$ 14.50 - $ 14.50

$ 14.50

$ 14.50 - $ 14.50

$ 14.50

Availability:

In stock

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Compatible Collections

Signature Classic
Signature Midnight

Shipping & Delivery

Shipping Costs: We offer UPS®, USPS®, and LTL shipping, with free UPS® Ground on orders over $1,999. Available shipping methods depend on order size, volume, and destination. Learn more

Delivery Times: Estimated delivery times are based on your location and the chosen shipping method.

Orders shipped by UPS® Ground may take 1–5 business days to deliver within the 48 contiguous United States. Shipments to Alaska, Hawaii, and Puerto Rico will take 4–5 business days to arrive at their destination.
UPS Next Day Air and 2nd Day Air orders placed before noon on Friday will be delivered by UPS the following Monday or Tuesday respectively.

International Shipping: We ship to Alaska, Hawaii, Puerto Rico, the U.S. Virgin Islands, and Canada (excluding Quebec). Learn more

Free Shipping: We offer free UPS® Ground shipping on orders over $1,999 within the 48 contiguous U.S. states. Learn more

Exchanges & Returns

90-Day Returns

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No-Penalty Exchanges

Swap items with no restocking fee!
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Warning

This product can expose you to chemicals including Cobalt or Nickel chemicals, which are known to the state of California to cause cancer. For more information, go to www.P65Warnings.ca.gov

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US-Based Project Help

(574) 742-2737

In Stock

Ships in 6–10 days

Product Details

Seamlessly connect your aluminum handrail with hidden, internal splines.

Seamless Connection Every Time:

Made from aluminum and secured with the included set screws
Exclusively for Cable Bullet Reinforced Aluminum Handrail
Designed for level or straight runs

NOTE: Splines are designed for a snug fit on both ends. If installation feels uneven, check for resistance points on the handrail and file down the internal ribs with a coarse hand file until the fit is perfect.

DIY Skill Level Recommended:

Beginner: Little to no DIY experience needed—utilizes simple techniques

Application:

Recommended for interior and inland exterior applications

Stainless Steel & Aluminum Care & Maintenance

Maintaining the beauty of your stainless steel or aluminum railings is simple! For routine cleaning, you only need a mild dish soap solution and a soft microfiber cloth. Wipe down the railings to remove dust, dirt, and fingerprints. For tougher grime, a vinegar solution (equal parts vinegar and water) can be used. Avoid harsh chemicals, abrasive cleaners, and steel wool, as these can damage the surfaces. Remember to rinse thoroughly and dry with a clean cloth to prevent water spots.

Cable Bullet Care and Maintenance Instructions (PDF)

Video Tutorial

How to Clean & Maintain Stainless Steel Cable Railing

Frequently Asked Questions

How does the handrail fit together with a Fixed Straight Spline?

Insert one end of the spline into a section of handrail, and use a mallet to drive it in place. Slide the second piece of handrail over the exposed end of the spline and tap the two pieces together with the mallet. Secure both sides with screws on the underside of the handrail for a clean, firm connection.

Is a post required underneath the spline?

No post is needed under a structural spline, as it provides support. As long as your posts are spaced no more than 8 feet apart, you can add splines wherever necessary to connect the handrail.

Made from T6061 Aluminum

Durable, high-quality material for lasting use

Ultra-Strong—No Supporting Post Needed

Continue your run anywhere—no need to break your handrail over a post

Internal & Seamless Handrail Connection

Create a smooth, hidden connection

Get a Free Project Quote

Let us do the work! Our cable railing experts will build your cart and send you a personalized estimate in as little as 24 hours.

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Popular Collections

Overall rating: 4.571429 / 5 from 7 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["quality","fit"].

Review highlights

Reviews

"Solid block of aluminum! No movement in joint"

— Austyn (5/5)

Straight fixed spline

"It seems when you join the 2 rails together with the spline in place, the rail will deflect towards the tapered side of the spline causing the rail to have a bend or not laying flat. How to eliminate this?"

— Michael W. (2/5)

"Nicely machined. Snug fit"

— Barton (5/5)

worked great

"worked great"

— Maria G. (5/5)

Fit was perfect

"Fit was perfect"

— Jody C. (5/5)

Good Quality!

"Good Quality!"

— Jason C. (5/5)

Great products

"These products are of high quality and work well together. Their customer service was also excellent."

— Maulan B. (5/5)

Q&A

Can you use the fixed corner spline for a 90 degree turn into a wall for a handrail? What are the measurements of the fixed corner spline and can it be trimmed?: Yes, in certain situations 90-degree fixed splines can be used to turn into a wall. However, without knowing your exact project layout, I can’t guarantee that it will be the right solution for you. You may also need to use a handrail bracket on your wall surface for added support. The sales representative working on your estimate will always have the most relevant information. I would recommend talking with them. As for the dimensions, the arms of our fixed splines are 1.5” wide and approx. 0.735” tall. The inner length of the arms run 2.5” from the inner corner to the end, and the outer length runs 4” from the outer corner to the end. And yes, our fixed corner splines can be trimmed if needed. If you have any more questions, our sales team would be happy to help you! You can reach them by calling 574-742-2737 or by emailing info@cablebullet.com.
Do these fit inside a ⅛" x 1" x 2" AL. rectangle stock?: Hello, Shawn! Unfortunately, our splines are designed exclusively for our aluminum handrail (link below) and will not fit inside the dimensions you've listed. https://www.cablebullet.com/products/aluminum-handrail