CORROSHIELD® Fasteners BOTAPP® Board Fixing Screw
BOTAPP® is a premium board fixing screw designed for consistent fastening in board and drywall-related applications. With a low-profile countersunk (CSK) head, BOTAPP® delivers a neat finish while supporting stable seating during installation. The full-thread design improves grip on both timber and light steel, and the LEVIN® drill point supports efficient driving on site, making it a reliable choice for interior board fixing screws and drywall fasteners alike.
Best for:
Contractors, fabricators, and project teams who want dependable countersunk board screws with repeatable performance across installations, whether fixing board to timber or using them as self drilling screws in light steel sections.
Contractors, fabricators, and project teams who want dependable countersunk board screws with repeatable performance across installations, whether fixing board to timber or using them as self drilling screws in light steel sections.
Specification
Material: Carbon Steel
Head: Low Profile Countersunk (CSK)
Drive type: Phillips (PH2)
Thread: Full Thread
Drill point: LEVIN® Drill Point (variant dependent)
Drilling Capacity: Up to 3.0mm steel (variant dependent)
Where BOTAPP® is used
BOTAPP® is ideal for board fixing work where a flush countersunk finish and strong hold are required.
Common applications:
Common applications:
Fixing board into timber purlins using board to timber fasteners
Board fixing / drywall applications requiring reliabledrywall fasteners
Board-to-steel fixing in light steel sections usingboard to steel fasteners (within drilling capacity)
Note: If you’re unsure about substrate thickness or which size to use, share your application details and we’ll recommend the right BOTAPP® specification.
Why BOTAPP® Outperforms Standard Interior Board Fixing Screws
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Superior holding power
Full thread engagement supports a strong grip for stable board fixing — essential for both low profile countersunk screws and heavy-duty installations.
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Flush, professional finish
The low-profile CSK head is designed to sit neatly and reduce surface protrusion, making BOTAPP® the preferred choice for visible interior board fixing screws.
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Controlled seating for better installs
Underhead design supports stable embedment and helps reduce common issues like overdriving and loosening, a key advantage when used as countersunk board screws in drywall.
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Faster installation
LEVIN® drill point supports efficient drilling and driving, saving time on repetitive fastening jobs, particularly when using BOTAPP® as self drilling screws in steel-framed construction.
Quality you can trust
BOTAPP® is part of a premium fastener range supported by strict quality control practices and testing capabilities.
Every batch is designed to meet consistent performance expectations—including dimensional checks and mechanical verification—so you can specify with confidence for board fixing work, whether you’re sourcing board to timber fasteners, board to steel fasteners, or standard drywall fasteners.
Every batch is designed to meet consistent performance expectations—including dimensional checks and mechanical verification—so you can specify with confidence for board fixing work, whether you’re sourcing board to timber fasteners, board to steel fasteners, or standard drywall fasteners.
How to Choose the Right Board Fixing Screws for Timber & Steel Substrates
Identify the application – Choose the BOTAPP® screw based on whether it's for wood-to-wood or metal-to-metal fastening. Use board to timber fasteners for timber purlin fixing, or board to steel fasteners for light steel section applications.
Check substrate thickness –Match the screw length and drill point to the steel or support thickness to ensure secure penetration and grip. This is especially important when specifying low profile countersunk screws where embedment depth matters.
Select sealing requirements – Opt for EPDM-sealed washers where water-tightness and weather resistance are critical. This ensures a reliable seal in exposed or semi-exposed board fixing environments
Consider environment & load – Pick corrosion-resistant coatings and appropriate head types based on exposure conditions and structural load needs, especially when using interior board fixing screws in high-humidity or load-bearing areas.
Get Pricing & availability for BOTAPP®
Frequently asked questions
BOTAPP® is used for board fixing screws applications, including fixing board into timber purlins and selected board-to-steel applications where a countersunk finish is required. It also serves as a reliable choice for drywall fasteners in interior construction.
Yes, BOTAPP® is designed as a reliable board to timber fastener, providing strong grip and a flush finish when fixing boards into timber purlins.
BOTAPP® can be used as board to steel fasteners in light steel sections, subject to drilling capacity. Always check the substrate thickness before selection.
BOTAPP® uses a Phillips (PH2) drive type, suitable for consistent driving on repetitive board fixing and drywall fastener applications.
BOTAPP® features a low-profile countersunk (CSK) head, making it ideal where countersunk board screws and flush finishes are required.
BOTAPP® is available in a range of sizes suited for various board fixing and drywall fastener applications. Contact our team for the full size chart.
The BOTAPP® underhead design with controlled seating helps reduce overdriving. When using low profile countersunk screws, set your driver torque appropriately for the board thickness.
Choose the screw length based on board thickness plus the required embedment into the substrate. For self drilling screws in steel applications, ensure the drill point capacity matches the steel gauge.
