Project Tubular Latch 76mm Radius Forend Heavy Duty Internal Door Latch Smooth Reliable Operation Durable Hardware

In professional construction and property management, a “Project Latch” signifies a component designed for high-volume installation without sacrificing structural integrity. The 76mm Radius Project Tubular Latch (3-inch) is specifically designed for modern door preparation. The rounded “radius” forend allows joiners to use a standard router bit to create the mortice, eliminating the need to square off corners with a chisel—a critical time-saver on multi-unit sites.

With a generous 57mm backset (the distance from the door edge to the center of the spindle), this 76mm Radius Project Tubular Latch is the ideal choice for traditional timber doors and wide-stile modern doors. It positions the handle or knob further from the frame, providing superior ergonomics and preventing “knuckle-clipping” against the door stop. Housed in a robust, zinc-plated steel casing with a Satin Stainless Steel (SSS) forend, it delivers a consistent, premium feel with every operation.

Why the 76mm Radius Project Tubular Latch  is the Professional Choice

• Rapid Radius Installation: The rounded forend is designed for use with standard 20mm or 25mm router bits, significantly reducing fitting time on large-scale projects.

• Ergonomic 57mm Backset: The 76mm case length provides the optimal handle position for aesthetics and ease of use, particularly on heavy internal doors.

• Reinforced Spring Mechanism: Designed with a heavy-gauge internal spring that can support the weight of solid-core doors and heavy lever handles without “drooping.”

• Precision Guided Latch Bolt: Features a solid, profiled bolt that is guided within the barrel to reduce friction, resulting in a smooth, reliable operation and a whisper-quiet close.

   

• Bolt-Through Fixing Points: The 76mm Radius Project Tubular Latch is pierced to allow “male-to-female” bolt-through fixings to pass directly through the mechanism, preventing handles from pulling loose over time.

• Fire-Rated Compliance: Tested for use on 30-minute fire doors (FD30), making it a safe and compliant choice for internal apartment doors and commercial escape routes.

Technical Specifications of 76mm Radius Project Tubular Latch

Professional Installation for Maximum Durability

To ensure your 76mm Radius Project Tubular Latch performs at its peak throughout its service life, follow these professional fitting guidelines:

1. High-Volume Routing: For project work, use a 25mm router bit and a dedicated door jig. This ensures that every latch hole is perfectly centered and horizontal across all doors on the site.

2. Clear the Mortice: Before inserting the latch, use a blast of compressed air to remove all sawdust from the hole. Fine debris inside the latch mechanism is the leading cause of “sticky” bolts in new builds.

3. Correct Backset Alignment: Always measure twice before drilling for the spindle. If the hole is off-center by even 1mm, the handle rose will struggle to sit flush, putting lateral stress on the latch.

4. Recess the Strike Plate: For a seamless close, the strike plate must be recessed flush into the frame. Ensure the cavity behind the plate is deep enough for the bolt to fully extend and “click” home.

5. Bi-Annual Maintenance: Wipe the faceplate with a clean cloth and apply a small amount of dry PTFE lubricant (avoid sticky oils or WD-40) to the latch bolt every 12 months to maintain the low-friction operation.

The Standard for Reliable Joinery

The 76mm Radius Project Tubular Latch is the invisible detail that ensures a property feels high-quality from the moment a door is opened. It turns a basic functional movement into a satisfying, reliable experience while maximizing efficiency for the installer. By choosing a reinforced, project-grade latch with radius corners, you are investing in hardware that is as practical as it is durable.

This 76mm Radius Project Tubular Latch  with radius forend is designed for smooth and reliable door operation, making it a practical choice for internal doors in both residential and commercial properties. The 76mm backset ensures comfortable handle positioning, while the radius forend provides a clean, rounded edge finish that fits neatly into pre-cut door recesses. It is suitable for use with lever handles and knobs, offering consistent functionality and durability.

Manufactured from strong and long-lasting materials, this 76mm Radius Project Tubular Latch is built to withstand frequent use while maintaining dependable performance. The radius forend design makes it especially convenient for installations where rounded mortices are already cut, saving time and effort during fitting. Easy to install with all fixings included, this 76mm Radius Project Tubular Latch provides a professional and reliable solution for builders, contractors, and homeowners looking for durable and efficient internal door hardware.