For setting cables in

soft or hardwood posts

Shop >

For fitting cables through

vinyl or composite post sleeves

SHOP >

Tensioners, posts & handrail for

aluminum or steel railing

SHOP >

For anchoring cables to

masonry posts or columns

SHOP >

Guides for installing the Cable Bullet system

View All >

Instructions for treating and preserving your cable railing

Read More >

How to Install Aluminum Handrail on Signature Series Posts

How difficult is this project?

This project is: Intermediate - Advanced

The process of installing aluminum handrail on Signature series posts requires careful measurement and attention to detail. Most handrail layouts are straight-forward, but advanced skills may be required for complex handrail joints.

Cable Bullet flat black Signature series posts on deck

Nothing says modern elegance like Signature series posts and matching reinforced aluminum handrail. Designed to meet IRC standards for graspability, aluminum handrail requires minimal maintenance, and the slim profile offers a cleaner, clearer view. Handrail is available in 93" sections that piece together with structural splines, allowing for longer, continuous spans.


Does your project include stairs?

Check out the guide below for handrail design recommendations on stair runs. Consider your project specifications, post layout, and post top selection before starting your installation.


Materials LIST

Tools:

  • Drill/impact driver (with 5/32" bit)
  • Screwdriver
  • Miter saw with metal cutting blade
  • Tape measure
  • 3/16" Allen wrench 
  • 1/8" Allen wrench (modern top only)
  • Handrail clamp (classic tops only)
  • Spanner nut bit (classic pivot top only)
  • Angle finder (angled runs)
  • Mallet (setting fixed corner splines in place)
  • T-bevel (setting the angle of adjustable splines)

installation instructions

PLEASE NOTE: All Cable Bullet recommendations and rail components are designed to comply with the International Residential Code (IRC). However, because building codes may vary it is the installer’s responsibility to verify that the installed system complies with all applicable state and local building codes.
For more information on Cable Bullet and building code standards, visit our terms page.

1.| Cut Handrail Pieces

Use a miter saw and metal cutting blade for any custom cut length.

Use a miter saw and metal cutting blade for any custom cut length.

PRO TIP: Use painter’s tape when cutting through powder-coated handrail to minimize chipping.

Use a file for any burrs inside the handrail section

Before joining your cut sections of handrail, file away any burrs. A clean channel will allow for a cleaner joint.

PRO TIP: Before removing the painter’s tape, spray your ends with touch-up spray to cover any blemishes.

2.| Join Level Straight Runs

Piece together level handrail sections using structural fixed straight splines

Piece together longer, level handrail sections using structural fixed straight splines A. Splines are tapered and will tighten up as they are inserted into the spline. NOTE: Structural fixed splines do not need to be supported over a post!

3.| Join Level Corner Runs

use corner splines for all 90-degree turns

Use Delrin fixed corner splines B for all 90-degree turns. Set in place using a mallet. If necessary, use a file on the spline to ease installation.

4.| Adjustable splines for Angled Joints

use adjustable splines at angled transition joints

Use adjustable splines C, D, E, F at your angled transition joints. Set the angle of your adjustable spline with a T-bevel and lock it in place with a 3/16” Allen wrench.

Handrail Bevel Cuts
Use an angle finder to determine the pitch of your stairs and make the appropriate bevel cut for your handrail.

four adjustable splines
  • Adjustable straight spline C
  • Adjustable vertical corner spline D
  • Adjustable horizontal corner spline E
  • Adjustable 180-degree spline F

5.| Securing splines & Handrail

secure the splines and handrail

Fasten the spline to the handrail, one piece at time to allow for minor adjustments. First, drill a countersink for a #8 x 3/4” stainless steel flat head sheet metal screw.

Use a 5/32” bit to drill the pilot hole. To avoid stripping or breaking the screw, use a screwdriver to set the screw.

6.| Mounting handrail to Classic Post Tops

Temporarily secure your handrail to the post top using the Cable Bullet handrail clamp.

Temporarily secure your handrail to the post top using the Cable Bullet handrail clamp.

PRO TIP: Use painter’s tape where necessary to protect the finish on your handrail.

drill pilot holes and drive in handrail mounting screws

Drill 5/32” pilot holes. Use 4 handrail mounting screwsto secure the handrail. To avoid stripping or breaking screws, use a screwdriver.

7.| Mounting handrail to modern Post Tops

mounting handrail to modern tops

Loosen the set screw that secures the top collar F to the center pin G. Attach the adhesive disk to the top collar. Place your handrail on top, press down firmly and remove the handrail and top collar together.

Drill 5/32” pilot holes. Use 4 handrail mounting screws to secure the top collar to the handrail. To avoid stripping or breaking screws, use a screwdriver. Reassemble and lock in place.

8.| Install your cables

Your railing is now ready for cable infill. Complete this process following How to Install Cable Rail Tensioners in Metal Posts.

Site Search