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. 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.
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
Fixing into concrete (with correct drilling and embedment)
General construction anchoring where a concrete screw is preferred over plugs
Why choose CONTAPP®
?
/1
Strong bite in masonry
The Hi‑Lo thread profile helps improve grip and stability in masonry substrates.
/2
Dependable installation performance
The diamond point supports consistent placement and engagement in drilled holes.
/3
Corrosion protection for longer service life
CONTAPP® includes anti-corrosion protection to help resist rusting in demanding site conditions.
/04
Cleaner aesthetics (when required)
Available in RAL colour matched options for visible applications where finish matters.
Not sure which CONTAPP® to choose?
Tell us your application and we’ll recommend the right diameter, length, and head type.
What to share:
Substrate: masonry / concrete (and density, if known)
Fixing thickness (what you’re fastening)
Edge distance available
Quantity & delivery location
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.
Assess base material strength – Choose the correct screw diameter and length according to the density and thickness of the concrete or masonry.
Determine load requirements – Ensure the screw meets the required load-bearing capacity for structural or non-structural fixing.
Consider environmental conditions – Opt for suitable coatings or finishes to provide corrosion resistance in indoor or outdoor environments.
CONTAPP® installation guidelines
Use the appropriate drill bit to drill a hole in the masonry substrate.
Remove dust and debris from the hole.
Use a suitable powered percussion drill to drive the CONTAPP® into the substrate.
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).
