Barrel bolt – 300mm x 40mm

In the hierarchy of ironmongery, the 300mm Barrel Bolt represents a significant step up from standard domestic latches. At 12 inches in length, this bolt provides an extended “throw” and multiple fixing points, allowing it to bridge the larger gaps often found in heavy timber gates or industrial door frames. It is the primary choice for securing the “slave” leaf of a pair of double doors, ensuring the secondary door remains rigid while the main door is in use.

Manufactured from Grade 304 Stainless Steel (SS304), our 300mm version is naturally rust-proof and resistant to oxidation. This makes 300mm Barrel Bolt an ideal solution for external perimeter gates, coastal properties, or high-traffic commercial plant rooms. Finished in premium Satin Stainless Steel (SSS), it provides a clean, modern aesthetic that resists scuffs and maintains its “architectural” look under heavy use.

Why the 300mm Barrel Bolt is the Professional Choice

• Substantial 300mm (12″) Profile: Provides excellent leverage and structural support for tall doors, preventing warping and “kick-in” attacks.

• Heavy-Duty Solid Shoot: Constructed with an oversized bolt diameter (typically 12mm to 15mm) to provide high shear resistance against impact.

• Grade 304 Stainless Steel Build: Guaranteed to remain smooth and functional in outdoor or damp environments without seizing or pitting.

• Multi-Point Fixing Plate: The 12-inch barrel features additional screw holes to distribute stress evenly across the timber, preventing the hardware from being pried loose.

• Universal Strike Plate Options: Supplied with a flat plate for flush frames and a recessed floor socket for vertical “drop bolt” applications.

• High-Torque T-Bar Handle: Designed for a comfortable, firm grip, allowing for effortless operation even if the door or gate has slightly dropped.

Technical Specifications of 300mm Barrel Bolt

Professional Installation and Maintenance Tips for 300mm Barrel Bolt

A 300mm bolt is a serious piece of security hardware; ensure its performance with these professional tips:

1. Vertical Drop Mounting: If using as a “drop bolt” for a gate, ensure the floor socket is cleared of debris regularly. For the best security, set the socket into a stone or concrete threshold rather than just the timber frame.

2. Pilot Holes for Hardwood: When fixing into dense woods like Oak or Teak, always drill a pilot hole 75% of the screw’s diameter. This ensures the stainless steel screws drive in smoothly without snapping the heads.

3. Allow for Door Movement: Large timber doors expand in humidity. Install the strike plate with 2mm of clearance to ensure the 300mm shoot can still slide home during the winter months.

4. Symmetry for Double Doors: For maximum stability on double doors, install one 300mm bolt at the very top and one at the bottom. This locks the inactive door into the frame at two distinct points.

5. Dry Lubrication Routine: Every 12 months, apply a small amount of graphite powder or dry PTFE spray to the sliding barrel. Avoid grease or oil, as they attract grit which can cause the 12-inch mechanism to feel “gritty” over time.

The Standard for Robust Security

The 300mm Barrel Bolt is the definitive “heavy-duty” choice for residential and light-commercial projects. It offers a level of physical and visual security that provides immediate peace of mind. By choosing a 300mm SS304 architectural bolt, you are investing in a long-term security detail that is as durable as it is aesthetically refined.

Upgrade your door and gate security with this 300mm Barrel Bolt , designed to deliver reliable locking and smooth operation. Manufactured from sturdy materials, this bolt offers excellent durability, making it suitable for both indoor and outdoor use. Its 300mm size provides the perfect balance between compact design and strong holding power, ensuring dependable protection for doors, gates, sheds, and shutters.

Easy to install and simple to use, this 300mm Barrel Bolt is an ideal choice for homeowners, businesses, and DIY enthusiasts. Built to withstand daily wear and tear, it ensures long-term performance and peace of mind. Whether you need added security for external gates or extra reinforcement for interior doors, this bolt provides strength, practicality, and reliability in one solid design.