CORROSHIELD® Fasteners CONTAPP® Concrete Screws
CONTAPP® is a carbon steel concrete screw range developed for secure fixing in light to medium density masonry or concrete. As a trusted construction fastener and industrial fastener, the Hi-Lo thread design supports strong engagement in masonry substrates, while the diamond point helps achieve consistent installation in pre-drilled holes.
Whether you’re handling repetitive site fixings or one-off anchoring tasks, CONTAPP® is built for dependable fastening where speed and reliability matter, making it one of the most reliable self drilling screws and structural fasteners available from a leading self drilling screws India supplier. Its corrosion resistant fastener coating ensures long service life in demanding environments.
Whether you’re handling repetitive site fixings or one-off anchoring tasks, CONTAPP® is built for dependable fastening where speed and reliability matter, making it one of the most reliable self drilling screws and structural fasteners available from a leading self drilling screws India supplier. Its corrosion resistant fastener coating ensures long service life in demanding environments.
Specification
Material: Carbon Steel
Thread: Hi‑Lo Thread
Point: Diamond Point
Corrosion protection: Anti-corrosion
Colour options: RAL colour matched
Drilling / embedment requirement:
- Minimum embedment depth: 25mm
- Substrate hole clearance (recommended):
- For size 4.8: Ø 6.35mm
- For size 6.3: Ø 7.95mm
Where CONTAPP® is used
CONTAPP® is suitable for projects requiring fastening into masonry or concrete—especially where light to medium density substrates are involved.
Typical use cases include:
Fixing into light to medium density masonry, a core application for construction fasteners and industrial fasteners.
Fixing into concrete (with correct drilling and embedment) using reliable self drilling screws.
General construction anchoring where a concrete screw is preferred over plugs, ideal for structural fasteners and corrosion resistant fasteners in site conditions.
Why choose CONTAPP®
?
/1
Strong bite in masonry
The Hi-Lo thread profile helps improve grip and stability in masonry substrates, a key performance feature for structural fasteners and construction fasteners used in demanding site conditions.
/2
Dependable installation performance
The diamond point supports consistent placement and engagement in drilled holes, making CONTAPP® a reliable self drilling screw and industrial fastener for repetitive anchoring tasks.
/3
Corrosion protection for longer service life
CONTAPP® includes anti-corrosion protection to help resist rusting in demanding site conditions, the hallmark of quality corrosion resistant fasteners sourced from trusted self drilling screws India suppliers.
/04
Cleaner aesthetics (when required)
Available in RAL colour matched options for visible applications where finish matters, suitable for construction fasteners used in architectural or exposed installations.
Fastener Types
Choose your head type
CONTAPP® is available in two common head styles to match your application needs as construction fasteners, industrial fasteners, and structural fasteners:
Hex Slotted Head: Best when you want higher driving torque and robust tool engagement, preferred for heavy-duty structural fasteners.
Countersunk Flat Head:
Best when you want a cleaner, flush finish at the surface, ideal for visible construction fasteners applications.
.
Not sure which CONTAPP® to choose?
Tell us your application and we’ll recommend the right diameter, length, and head type for your self drilling screws, industrial fasteners, or corrosion resistant fasteners requirement.
What to share:
What to share:
Substrate: masonry / concrete (and density, if known)
Fixing thickness (what you’re fastening)
Edge distance available
Quantity & delivery location, we supply self drilling screws India-wide
How to Select the Right CONTAPP® Screw?
Define the application type –Select the CONTAPP® screw based on whether it's used for concrete, masonry, or block substrates, matching the right construction fasteners or structural fasteners to the job.
Assess base material strength – Choose the correct screw diameter and length according to the density and thickness of the concrete or masonry, essential for self drilling screws performance.
Determine load requirements – Ensure the screw meets the required load-bearing capacity for structural or non-structural fixing, critical when specifying industrial fasteners and structural fasteners.
Consider environmental conditions – Opt for suitable coatings or finishes to provide corrosion resistance in indoor or outdoor environments, the standard for quality corrosion resistant fasteners from self drilling screws India suppliers.
CONTAPP® installation guidelines
Use the appropriate drill bit to drill a hole in the masonry substrate, correct preparation ensures your self drilling screws and construction fasteners perform to specification.
Remove dust and debris from the hole before installing industrial fasteners or structural fasteners.
Use a suitable powered percussion drill to drive the CONTAPP® into the substrate, recommended for all corrosion resistant fasteners in masonry applications.
Drive the CONTAPP® until the underhead is secured to the surface. Do not overdrive. Minimum distance to edge: 32mm.
Installation guideline
Get Pricing & availability for CONTAPP®
Frequently asked questions
CONTAPP® is a concrete screw range designed for fixing into light to medium density masonry or concrete.
Yes. CONTAPP® installation follows a drilled-hole process, including clearing dust and debris before driving the screw.
Recommended substrate hole clearance from the brochure: Ø 6.35mm for 4.8 and Ø 7.95mm for 6.3.
BOTAPP® uses a Phillips drive (PH2). Minimum embedment depth is 25mm.
Minimum distance to edge is 32mm (as per the brochure guideline).
