Flush bolts are increasingly used in modern architectural decoration and security design. Unlike traditional Surface Bolts, flush bolts are recessed into the edge of the door leaf, enhancing door stability while also maintaining aesthetic appeal. With growing market demand, the proper installation of flush bolts has become a hot topic in the hardware and construction industries.

Features of Flush Bolts

Flush bolts are commonly used to secure the leaf in double-leaf doors. Installed at the top or bottom edge of the leaf, they secure the door to the doorframe or floor with a push-pull operation. They provide additional security and stability without compromising the appearance of the door, making them a popular choice for high-end residential, office, and commercial projects.

Installation Steps and Key Points

• Position Measurement: Determine the bolt's installation position at the top or bottom of the door leaf, and accurately measure the bolt's length and the door thickness.

• Grooving Preparation: Use an electric milling machine or chisel to create a groove in the door leaf that matches the bolt's dimensions, ensuring the depth and width match the bolt's dimensions.

• Installing the Bolt: Insert the bolt into the groove and secure with screws to ensure smooth sliding motion. Drilling and Installing the Clamp Plate: Drill holes above the door frame or in the floor and install the metal clamp plate to ensure smooth latch insertion.

• Debugging and Refinement: Repeated push-pull tests to check the latch's smooth extension and retraction. Fine-tune the notch or clamp plate position if necessary.

Installation Risks and Precautions

• High Precision Requirements: Excessive deviation in the notch opening may cause the latch to loosen or become stuck.

• Compliance Issues: Randomly installing concealed latches on fire doors or emergency exits may impede escape and must comply with relevant regulations.

• Material Selection: Stainless steel or high-strength alloys are recommended for durability and corrosion resistance.

Industry Trends and Innovations

With the increasing demand for both aesthetics and functionality in design, some hardware manufacturers are developing automatic-return concealed latches and electronic concealed latches that integrate with smart door control systems. These products not only enhance operational convenience but also align with the trend toward intelligent and high-end design.