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Use with soft or hardwood posts


Use with vinyl or composite post sleeves


Use with Signature series or custom metal posts


Use with structural masonry posts or columns


Aluminum posts, matching handrail, and stainless steel cable railing.

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All stainless integrated post and tensioning cable railing.

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How to install cable rail kits in wood, metal, or masonry posts.

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Free Shipping Over $1,999* | Details >

Cable Rail Tensioner Kit for Metal Posts


In Stock - Ships in 1–3 business days.

Free shipping on orders over $1,999* Full Details >

Connect Your Cable Ends to Metal Posts

Add a clean, modern touch to your deck or interior stair railing. Our patented system tensions cables inside the post, so you get a clear view without the bulky, external hardware. Whether you're a DIYer or professional installer, the installation process is simple with beautiful results.

    Machined from marine-grade T316 stainless steel for maximum strength.

    Features a finer machine thread for steel and aluminum posts.

    Fits easily with Signature series terminal pre-tapped posts.

Product Details >

Clean. Versatile. Simple.

Enjoy the sleek look of cable railing without the bulky, external hardware. Cable Bullet tensioners fasten to the inside of the post, tightening cable runs out of sight. The universal tensioning mechanism means no more tensioning & non-tensioning ends, staggering cables around corners, or separate kits for level & angle runs. It's the same interchangeable hardware for all railing sections - simple, right?

Cable Bullet metal post tensioners feature a finer machine thread ideal for steel or aluminum post walls. They're designed to easily fit our Signature series terminal posts. The versatile design and minimal profile also make them a popular option for custom metal railing.

Simple Tensioning

Easily tighten your cables without the extra hassle or bulky hardware. This turnbuckle alternative makes cable railing so straightforward, anyone can do it!

Ideal for Steel & Aluminum Posts

Metal tensioner kits thread easily into Signature series posts. The finer machine thread and minimal profile also make them a great option for custom metal railing.

Universal Hardware, Less Complexity

Say goodbye to complex systems with different ends & uses. Cable Bullet tensioners use the same mechanism for straight, sloped, & angled runs.

High-quality, U.S. Made

Built for strength & durability with marine-grade T316 stainless steel, so you can be confident your railing is built to last. Tensioners are corrosion resistant, perfect for both indoor & outdoor projects.

Product Details

Each tensioner kit includes all the fittings necessary to anchor and tension a single cable end:

(1) Cable Bullet for metal posts

(1) Crimp sleeve

(1) Lobed washer

(1) #10-32 x 1/4" half dog socket set screw

(1) Rubber o-ring (pre-installed)
As the Bullet is advanced into the metal post, the o-ring acts as a cushion, so you can adjust the alignment of the set screw channel. Once set, the o-ring also serves as a lock washer, tensioning the Bullet to its preferred position.

My Project

Every cable run will require 2 tensioner kits, 1 for each cable end.

To calculate the number of kits required for your project, simply add up the number of terminal cable ends along your railing. Use the same kit on level or sloped runs up to 20 feet long.

All Cable Bullet cable railing kits fit exclusively with 5/32" cable. If your project includes sloped or angled rail sections, we highly recommend using 7x7 cable. The additional flexibility of the 7x7 cable braid allows for cleaner lines and tighter angles between staggered posts.

Shop 5/32" 316 Stainless Steel Cable 7x7 >

Overall costs will vary widely by project design and layout. The average cost per foot will fluctuate based on span lengths, rail height, and handrail selection.

A base estimate for projects using tensioner kits for metal posts and Signature series railing:

$85- $90 / linear foot of railing*

*Average cost is based on a standard 12' x 24' deck with one short set of stairs and approximately 50'-60' of 36" high railing, 6' average post spacing with spacer bar kits. Tools not included.

Want a more accurate estimate specific to your layout? 
Fill out the short Estimate Form, and our project support team will send you a cost estimate, project layout recommendations, and a complete materials list free of charge.

cable rail tensioner for metal posts