In the world of structural ironmongery, the 450mm Barrel Bolt represents the transition from domestic hardware to industrial-grade security. At 18 inches in length, this bolt provides an expansive “throw” and multiple fixing points, allowing it to bridge significant gaps between doors and frames that smaller bolts cannot handle. It is the primary choice for securing the “inactive” leaf of a pair of double doors or for anchoring the base of a heavy driveway gate.

Manufactured from Grade 304 Stainless Steel (SS304), our 450mm Barrel Bolt version is completely rust-proof and resistant to environmental pollutants. This makes it ideal for external use in coastal regions or high-moisture agricultural settings. Finished in premium Satin Stainless Steel (SSS), it maintains a clean, architectural appearance that complements modern industrial and residential designs alike.

Why the 450mm Barrel Bolt is the Professional Choice

Substantial 450mm (18″) Reach: Provides exceptional leverage and structural reinforcement for tall doors and heavy gates.
Reinforced Solid Shoot: Features an oversized bolt diameter (typically 15mm to 19mm) to offer high shear resistance against impact or extreme weather.
Grade 304 Stainless Steel Build: Ensures the sliding mechanism will not seize, rust, or pit, even when exposed to direct rain and salt spray.
Multi-Point Fixing Plate: The extended barrel length allows for 6 to 8 fixing points, distributing the load across a larger area of the timber to prevent the bolt from being pried off.
Versatile Strike Options: Supplied with a heavy-duty floor socket (for vertical mounting) and a reinforced keep (for horizontal mounting).
High-Torque Cranked Handle: The oversized T-bar handle is designed for a firm grip, allowing you to easily overcome any friction caused by slightly sagging or warped gates.

Technical Specifications of 450mm Barrel Bolt

Feature	Specification
Total Length	450mm (18 Inches).
Material Build	Grade 304 Stainless Steel (SS304).
Finish	Satin Stainless Steel (SSS).
Bolt Diameter	15mm – 19mm (Heavy Industrial Profile).
Fixing Type	Surface Mounted (Heavy Duty Security Screws Included).
Application	Driveway Gates, Double Doors, Warehouse Entrances.

Professional Installation and Maintenance Tips

A 450mm Barrel Bolt of this scale requires a robust installation to be effective. Follow these professional guidelines:

Vertical Anchoring: When used as a “drop bolt” at the base of a gate, ensure the floor socket is set into concrete or a stone threshold. This prevents the gate from “swinging” under wind pressure, which can damage hinges over time.
Pilot Holes for Large Fixings: Because 450mm bolts use larger screws, always drill a pilot hole 75% of the screw diameter. This is critical in hardwoods like Oak or Greenheart to prevent the timber from splitting under the high torque of the screw.
Allow for Natural Movement: Large timber gates expand and contract significantly. Install the strike plate with 3mm of clearance to ensure the bolt can still engage during the winter months when the wood is at its widest.
Symmetry in Pairs: On double doors, install one 450mm bolt at the top and one at the bottom of the “slave” leaf. This creates a “three-point” locking system when combined with the central mortice lock on the main door.
Dry Lubrication Routine: For a bolt of this size, avoid grease which attracts grit. A quick application of dry PTFE spray or graphite powder twice a year will keep the heavy shoot gliding effortlessly.

The Ultimate Choice for Perimeter Security

The 450mm Barrel Bolt is the definitive hardware solution for large-scale openings. It provides a level of physical and visual security that smaller fasteners simply cannot match. By choosing a 450mm SS304 architectural bolt, you are investing in a long-term stabilization and security detail that is built to withstand the elements and the test of time.

Secure your doors, gates, and shutters with this 450mm Barrel Bolt , built for strength, reliability, and long-lasting use. Manufactured from durable materials, this bolt ensures a smooth sliding action with a firm locking mechanism, making it an excellent choice for both residential and commercial properties. Its extended 450mm length provides enhanced security, ideal for larger doors and heavy-duty applications.

With a straightforward installation process, this 450mm Barrel Bolt is suitable for both professionals and DIY users. Designed to withstand daily wear and environmental conditions, 450mm Barrel Bolt delivers dependable performance over time. Whether fitted to gates, sheds, or internal doors, this bolt combines practicality, durability, and robust security to give you peace of mind.