Dust Socket for Flush Bolts – Concrete 20mm dia. x 38mm

When securing heavy industrial gates, commercial folding partitions, or high-security steel doors, standard 10mm or 12mm sockets are often insufficient. The 20mm concrete dust socket is engineered to accommodate oversized 19mm and 20mm shoot bolts, providing a massive surface area for lateral resistance. Like its smaller counterparts, the 20mm concrete dust socket utilizes a high-tension spring-loaded plunger. When the bolt is retracted, the plunger rises to create a flush, trip-free floor surface that actively rejects dust, gravel, and cleaning water.

Forged from solid high-density brass or marine-grade stainless steel, the 20mm concrete dust socket is built to survive the crushing weight of vehicle tires and heavy pallet jacks. By installing a 20mm concrete dust socket, you ensure that even the heaviest door leaf remains immovably pinned to the substrate, preventing the “rattle” and “play” associated with worn or debris-filled floor holes.

Why the 20mm Profile is the Industrial Choice

The 20mm concrete dust socket is the definitive solution for high-torque environments where security cannot be compromised by environmental filth.

• Oversized Internal Bore: Specifically designed for 19mm and 20mm heavy-duty bolts, ensuring a perfect “lock-in” fit.

• Reinforced Spring Mechanism: The 20mm concrete dust socket features a heavy-gauge stainless steel spring to handle larger, heavier plungers.

• Debris-Ejecting Plunger: Automatically clears the socket every time the bolt is lifted, maintaining the full depth of engagement.

• Heavy-Wall Construction: The thickened barrel of the 20mm concrete dust socket resists deformation under extreme physical attack or wind loads.

• Flush-to-Floor Safety: Eliminates the “open-hole” hazard in warehouses and public spaces, reducing liability and maintenance.

• All-Weather Durability: Available in natural Satin Brass or Brushed Stainless finishes to resist corrosion in external gate applications.

• Deep-Set Anchoring: The extended 40mm–50mm barrel provides superior leverage within the concrete slab.

Technical Specifications

Professional Installation for Maximum Retention

Installing a 20mm concrete dust socket requires precision due to its larger diameter. We recommend using a 25mm or 26mm diamond core bit to create the initial hole in the concrete. This provides a small “grout gap” around the barrel, allowing you to perfectly align the socket with the drop-bolt while the adhesive sets.

For high-traffic industrial floors, we suggest setting the 20mm concrete dust socket with a high-strength chemical anchor or non-shrink grout rather than standard epoxy. This ensures that the socket becomes an integral part of the concrete slab. Once cured, the flange should sit exactly flush with the floor to prevent damage from sweeping machines or trolleys. Secure your heavy-duty infrastructure with a 20mm concrete dust socket—the ultimate foundation for large-scale security.

Dust Socket for Flush Bolts – Wood 20mm dia. x 38mm
This dust socket for flush bolts is made in a 20mm diameter with a 38mm depth and is designed especially for use with wooden doors. It creates a neat housing for the flush bolt, holding it firmly in place and protecting the surface of the wood from wear or damage. By keeping the bolt secure, it improves the strength and stability of the door, making it an excellent choice for both light and heavy applications. The solid construction ensures long-lasting performance, and once installed, it gives reliable support for everyday use.

One of the key benefits of this dust socket is that it helps keep dust, dirt, and small particles away from the flush bolt mechanism. This reduces the chances of jamming, allows the bolt to move smoothly, and makes the door easier to operate. Its simple design makes installation quick and straightforward, and it blends neatly with the overall finish of the door without standing out. Suitable for homes, offices, and other buildings, this socket provides a practical and tidy solution for wooden door setups. Strong, durable, and low in maintenance, it ensures the flush bolt works effectively for years. Thank you for choosing us.