Zipbolt Angled UT Railbolt

The 11.550 Zipbolt Angled UT Railbolt provides a professional, efficient, and visually clean solution for attaching handrails to newel posts at an angle. Purpose-built for the stair industry, it utilizes Zipbolt’s UT gear drive technology, allowing for precise tightening even in deep or angled positions using a standard 5 mm hex bit or Allen key.

This connector’s pivoting 8 mm shaft features a coach bolt thread that can be manually threaded into the newel post. Once the handrail is drilled and the angle cut is made, the railbolt connects seamlessly, creating a durable, concealed joint that requires no visible screws or nail holes. The pivoting mechanism allows flexibility for a wide range of angles, ensuring a perfect fit and strong hold every time.

Key Features

• Specifically designed for angled handrail-to-newel post connections

• Pivoting 8 mm shaft accommodates a range of stair angles

• Tightens easily with a 5 mm hex bit or Allen key

• Concealed fastening system for a clean, seamless appearance

• All-metal diecast housing provides long-term strength and stability

• Quick and precise installation with Zipbolt UT drive technology

• Staircase construction and remodeling

• Handrail-to-newel post connections

• Interior architectural joinery

• Custom woodworking and millwork

• Product Name: 11.550 Zipbolt Angled UT Railbolt

• Material: Steel and zinc diecast

• Finish: Zinc plated

• Connector Type: Angled railbolt with pivoting 8 mm shaft

• Drive Type: 5 mm hex bit or Allen key

• Mounting: Threaded coach bolt for newel post connection

• Advantages: Concealed, adjustable-angle connector with high torque capacity

• Recommended Tools: Standard drill or cordless screwdriver (low torque setting)

Steps

1. Prepare the Newel Post

   • Mark and drill the hole according to the railbolt specification (Ø 6.5–7 mm for softwood or Ø 7 mm for hardwood).

   • Apply wax to the railbolt thread to ease installation.

   • Screw the pivoting shaft into the newel post until it reaches the pivot point.

2. Prepare the Handrail

   • Mark the intersection point 3 mm (1/8 in) from the end.

   • Bore a 10 mm (3/8 in) hole to a depth of 24 mm (15/16 in) centered in the rail.

   • Do not cut the angle until all boring is complete.

3. Insert Gear Housing

   • Place the UT drive housing into the pre-drilled hole in the handrail.

   • Use a cordless drill or screwdriver on a low torque setting to tighten.

4. Attach and Tighten

   • Position the handrail onto the pivoting railbolt.

   • Insert the 5 mm hex bit into the UT housing and tighten to draw the joint securely together.

   • Plug and sand the access hole for a smooth, concealed finish.

5. Final Adjustment

   • Verify alignment between handrail and newel post.

   • The connection should be firm, clean, and completely hidden.

Tips

• Avoid using impact drivers to prevent damage to the gear housing.

• Mark all drilling and angle cuts before assembly for the best fit.

• The pivot joint allows flexible angle adjustment to accommodate site variations.