923A/N 152Mm Black Japanned Necked Tower Bolt
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
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Description
923A/N 152Mm Black Japanned Necked Tower Bolt
When it comes to securing your property, the hardware you choose defines the reliability of your entire entrance system. The 923A/N 152Mm Black Japanned Necked Tower Bolt serves as a robust barrier against unauthorised access, blending traditional craftsmanship with modern engineering requirements. This item is designed for those who refuse to compromise on build quality or functional longevity.
Whether you are outfitting a garden gate, a shed, or an internal heavy door, this piece of hardware provides the necessary mechanical advantage to keep your spaces secure. Its striking black finish offers a clean, professional aesthetic that complements various architectural styles while resisting the elements.
Engineering Excellence and Design
The design of this specific model centres on the concept of the necked bolt, which allows for a offset drop. This configuration is particularly useful when the frame of the door is not perfectly flush with the door itself. By incorporating a necked design, you gain flexibility in installation without needing to mortise deep into the timber.
The material composition is selected for its strength and resilience under pressure. The black japanned coating is not merely for aesthetics, as it acts as a protective layer against oxidation and surface degradation. This ensures that the item maintains its structural integrity even in environments where humidity and temperature fluctuations are common.
Mechanical Physics and Operational Forces
Understanding the mechanical physics of this hardware helps in appreciating its value. When you engage the bolt, you are creating a mechanical bridge between the door and the frame. This action distributes shear forces across the length of the bolt, effectively neutralising attempts to force the door open through lateral pressure.
The necked design introduces a specific geometry that manages torque effectively during manual operation. Because the bolt is 152mm in length, it provides a substantial surface area for engagement within the keep. This prevents the component from flexing under physical stress, ensuring that the kinetic energy from a potential impact is absorbed by the surrounding timber rather than causing the hardware to fail.
Step by Step Operational Workflow
Operating this hardware is a straightforward process designed for maximum user comfort. First, the user aligns the bolt with the keep mounted on the door frame. Second, the user applies a lateral sliding motion to the handle, which moves the metal rod into the receiver plate. Third, the user pushes the handle into the locking notch to ensure it remains in a fixed position. This simple sequence ensures that the bolt remains engaged even when subjected to vibrations or accidental bumps.
Ergonomic Health and Safety Compliance
Safety is a primary concern in both residential and commercial settings. Using high quality hardware like this model reduces the physical strain often associated with stiff or poorly designed latches. The smooth action of the sliding mechanism ensures that individuals of varying physical strengths can operate the device without undue effort or risk of finger injury.
Furthermore, in a professional or commercial environment, installing robust security hardware is often a requirement for insurance compliance. By utilising a properly installed 152mm bolt, you are ensuring that your doors meet the baseline standards for physical security, which helps in maintaining a safe and controlled environment for staff and visitors alike.
Commercial ROI and Long Term Value
Investing in superior door furniture is a strategic decision that pays dividends over time. While cheaper, lower quality alternatives might seem attractive initially, they often require frequent replacement due to material fatigue, rust, or mechanical failure. This model is constructed to withstand years of consistent use, effectively lowering the cost of ownership.
By minimising the frequency of maintenance and replacement cycles, this item protects your assets and reduces the administrative burden on your facility management team. The cost of a single security breach or the time lost to repairing faulty hardware far outweighs the initial investment in a high quality, durable bolt. Choosing this product is a commitment to long term reliability and peace of mind.
Suitable Materials and Key Applications
This hardware is exceptionally versatile and can be applied to a wide range of materials. It performs optimally on timber, composite, and some metal door types. Its primary applications include the following scenarios.
- It is perfect for securing garden sheds and outdoor storage units against opportunistic thieves.
- The item functions effectively on internal heavy doors where additional security is required for privacy.
- It serves as an excellent reinforcement for side gates and perimeter access points.
- The design is suitable for use on workshop doors where heavy duty performance is a mandatory requirement.
- It works well in agricultural settings to keep stable or animal enclosure doors securely fastened.
Pro Tip Always ensure that the keep is mounted using high quality screws that reach deep into the door frame stud. This maximises the pull out resistance of the hardware and ensures the bolt performs at its peak potential under stress.
Technical Specifications
The following table outlines the precise dimensions and material characteristics of this product to assist with your installation planning.
| Feature | Specification |
|---|---|
| Product Name | 923A/N 152Mm Black Japanned Necked Tower Bolt |
| Length | 152mm |
| Material | Steel |
| Finish | Black Japanned |
| Design | Necked |
| Application | Internal and External Doors |
| Fixing Type | Surface Mounted |
When selecting the right hardware, it is essential to consider the environment. The black japanned finish is specifically formulated to provide a barrier against the elements. However, in highly corrosive coastal environments, we recommend regular light lubrication to ensure the sliding mechanism remains fluid and free of oxidation. This simple maintenance step will extend the life of your purchase significantly.
The installation process is designed to be accessible for both professional tradespeople and DIY enthusiasts. By following standard mounting procedures, you can achieve a secure and professional finish. Ensure that you have the correct drill bits and screwdriver heads to avoid damaging the finish during installation. If you are mounting onto hardwood, pre-drilling pilot holes is highly recommended to prevent timber splitting and to ensure the screws sit flush against the plate.
Ultimately, the 923A/N 152Mm Black Japanned Necked Tower Bolt represents the ideal balance between traditional security and functional efficiency. Its robust construction, combined with the practical benefits of the necked design, makes it an essential component for any security-conscious homeowner or business owner. By choosing this model, you are ensuring that your doors remain closed, secure, and easy to operate for years to come.
We invite you to browse our wider collection of security hardware if you require additional locking solutions or matching accessories for your doors. At Doorfit, we pride ourselves on providing only the most reliable components for your construction or renovation projects. If you have any specific questions regarding compatibility or installation techniques, our team is always here to provide expert guidance to ensure your project is a complete success.
Specification
| Finish | Black Japanned |
|---|---|
| Dimensions | 152 |

