QS Doorware Surface Mounted Bolt — 300mm | Stainless Steel
The QS Doorware 300mm Surface Mounted Bolt is a heavy-duty stainless steel barrel bolt designed for straightforward surface installation on timber doors and gates. Unlike a flush bolt — which requires mortising into the door edge — this bolt mounts directly onto the door face and frame with visible screws, making it quick to fit and easy to maintain.
Suitable for interior and exterior timber applications, the stainless steel construction provides long-lasting corrosion resistance, including in coastal and high-humidity environments.
Key Features
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300mm barrel length — a heavy-duty size suited to gates, double doors, and security applications
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Stainless steel construction — corrosion-resistant for interior and exterior use, including coastal environments
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Surface mounted — no mortising required; installs directly onto the door face with standard screws
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Smooth sliding action — precision-machined barrel for reliable, snag-free operation
- Suitable for timber doors and gates
Surface Bolt vs Flush Bolt — What’s the Difference?
A surface mounted bolt (also called a barrel bolt or tower bolt) is fixed directly to the face of the door and frame — the hardware is visible and proud of the surface. It is the simpler option to install and is commonly used on gates, shed doors, double doors, and anywhere a strong, accessible bolt is needed.
A flush bolt is mortised (recessed) into the door edge so that it sits flush with the door surface. Flush bolts offer a neater, more concealed finish and are typically used on the inactive leaf of interior double doors where appearance matters.
For exterior gates, outbuildings, and security applications, a surface bolt like this 300mm model is generally the more practical and robust choice.
Ideal For
- Garden gates and security gates
- Double timber doors — securing the inactive leaf at top and bottom
- Garage and shed doors
- Coastal properties requiring corrosion-resistant hardware
- Residential and commercial security applications
Specifications
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Model: QS4443/2
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Bolt length: 300mm
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Material: Stainless steel
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Mounting: Surface mounted (face-fixed)
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Application: Interior and exterior timber doors and gates
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Lead time: 3–4 days from order confirmation
Frequently Asked Questions
What is a surface mounted bolt?
A surface mounted bolt (also called a barrel bolt or tower bolt) is a sliding bolt that is fixed directly to the face of the door and door frame using screws. The hardware sits proud of the surface and is visible. It is a simple, strong, and easy-to-install security bolt widely used on gates, double doors, and outbuildings.
What is the difference between a surface bolt and a flush bolt?
A surface bolt mounts on the face of the door and is visible. A flush bolt is mortised into the door edge so it sits flush with the surface. Surface bolts are easier to install and more robust for heavy-duty applications. Flush bolts offer a neater finish for interior double doors where appearance is a priority.
Is this bolt suitable for exterior use?
Yes. The stainless steel construction is corrosion-resistant and suitable for exterior timber doors and gates, including installations in coastal or high-humidity environments.
What doors and gates is this bolt compatible with?
This bolt is designed for timber doors and gates. It is commonly used on garden gates, timber double door pairs, garage doors, and shed doors where a reliable surface bolt is required.
What is the lead time?
The lead time is 3–4 days from order confirmation. Nationwide delivery is available across South Africa.
Where can I buy a stainless steel surface bolt in South Africa?
This surface mounted bolt is available online at doorsdirect.co.za with nationwide delivery across South Africa, including Johannesburg, Cape Town, Durban, Pretoria, Port Elizabeth, and Bloemfontein.
Need help or have a query?
Our team is happy to assist with sizing, compatibility, or delivery queries. Reach us via info@doorsdirect.co.za or WhatsApp: 087 012 5283.
