Testing of fixings on site – R-HLX concrete screws
On-site fixing tests using a professional pull-out tester are one of the best ways to achieve 100% certainty regarding the strength of a selected or considered fixing. Today, we present a test of our last year’s new addition – the R-HLX concrete screws.
The pull-out tester was used to assess the strength and proper selection of fixings for balustrades in a concrete slab. The R-HLX concrete screw is specifically designed for such applications, so it passed the demanding test flawlessly.
Dominik Klimek
Project Engineer
R-HLX Concrete Screw
The R-HLX concrete screw is an innovative solution with versatile applications in construction and industry. Its newly designed thread, featuring additional cutting teeth, ensures quick and easy installation, even in reinforced concrete. The screw offers fire resistance in R30–R120 classes and is suitable for seismic zones C1 and C2. Its zinc flake coating provides corrosion resistance in C1–C4 environments. The screw's design allows for installation close to concrete edges and at short distances from other screws. It is specifically engineered to enable direct drilling and installation through the mounted element.
The R-HLX concrete screw is ideal for securing posts and road signs, road and bridge structures, plumbing and gas installations, scaffolding, seating in public venues, steel structures, and warehouse racking systems. It can be used in both cracked and non-cracked concrete (C20/25–C50/60), reinforced and non-reinforced concrete, as well as natural stone. Combining reliability, durability, and versatility, this product is the perfect solution for even the most demanding applications.
See the R-HLX Concrete Screw Test in Action
According to ETA-23/0707, the declared characteristic load capacity for size 10 screws in cracked C20/25 concrete at the minimum embedment depth is 9.4 kN.
For detailed technical specifications of R-HLX concrete screws, refer to the product data sheet for any R-HLX screw model.
Want to Order an On-Site Test? Need Expert Advice?
Take advantage of our testing services, design support, and professional technical consultancy!

How Does the On-Site Test Work? Watch the Video!
Learn more!
The R-HLX is Rawlplug's flagship concrete screw (mechanical anchor for concrete). Find out more about this product in the following articles: R-HLX – An Innovative Concrete Screw in the Mechanical Anchors Range, The Best Concrete Screws – Overview and Applications
Related articles
17 February 2025
#SiteTestingOn-site fixing test – R-KEXII chemical anchor with R-STUDS rod
17 February 2025
#PortfolioRawlplugThe first metro line in Ho Chi Minh City with Rawlplug anchors!
28 January 2025
#Mechanical anchorR-HLX concrete screw officially approved for seismic and fire resistance