Scrooz introduce Raptr thread cutting screws that are specifically designed to fix directly to concrete and masonry without the needing a plug and without expansion of any form.
Rapid installation is achieved by simply drilling a 6mm hole and then driving the anchor in using an electric screwdriver fitted with a TX30 driver bit. If necessary, the thread cutting screws can also be installed by hand using a suitable socket drive and ratchet.
Raptr thread cutting screws are available from 50mm to 200mm in length and are all 7.5mm in diameter.
Raptr thread cutting screws are designed and manufactured using a unique self cutting rifled threadform profile that cuts its own thread into the masonry and concrete. Where normal expansion plugs grip only at the expanded end, Raptr thread cutting screws grip over their full circumference and their full length giving a large contact area in the masonry, providing a simple high strength fireproof fixing needing just a small drillhole. Raptr thread cutting screws have a bright zinc plate finish for corrosion protection.
These self tapping hardened steel wall anchors can be used in any masonry, stone or medium strength concrete and are perfect for hollow concrete block and hollow bricks where an expansion fixing simply won't hold. Raptr thread cutting screws work by biting firmly into the masonry and as they don't expand, they are also perfect for decorative concrete and stonework that may crack when using traditional anchors. Raptr thread cutting screws can also be used in some high strength concretes but is subject to site testing.
Raptr thread cutting screws are ideal for fixing:
- battens and timber sections
- brackets and assemblies
- ducting and building services
- electrical services
- rainwater pipes
- screens and louvres
- signage
- tracks and channels
- window and door frames
Raptr thread cutting screws are quick and simple to install. Raptr thread cutting screws cut a thread as it turns, so as it gets deeper it requires a lot of torque (turning power) to continue cutting.