Concrete screw BTS E 6×155 with external thread M6. Quantity in package: 50 pcs. 9ZG6155M6BTSE

Concrete screw with external thread M6 – universal fastening in cracked and uncracked concrete

The BTS E 6x155 screw is a solution dedicated to fast and reliable fastening of elements in concrete – both in uncracked and cracked substrate. Its design allows two‑stage installation using a single tool: first drilling with a special SDS+ drill, then direct tightening without changing accessories. This significantly speeds up the installer’s work, especially when mounting rails, brackets or threaded rods.

The zinc‑aluminum coating provides high corrosion resistance – without additional protection, even in humid or aggressive environments. The external M6 thread (length 6 mm) enables direct tightening of nuts or components with internal threads, eliminating the need for extra fittings or adapters.

A length of 155 mm allows deep anchoring – ideal where a larger distance from the edge or a deeper mounting point is required. It is also possible to use a shallower embedment depth (35 mm), reducing the risk of hitting reinforcement bars when installing in existing structures.

The SDS+ 6 mm drill (effective length 105 mm) is compatible with this system – no need to purchase separate drilling and tightening tools. The hex socket SW10 allows the use of standard socket wrenches as well as CELO adapters (e.g., 9ATRBCA), enabling installation even in confined spaces.

Approved for multiple uses – safe and compliant

The product has ETA approval and CNBOP certification, meaning its load parameters have been verified by an independent institution. The permissible load in any direction is 1.02 kN with an embedment depth of 35 mm – sufficient for most non‑structural applications: ventilation, air‑conditioning, pipelines, conductor rails or electrical equipment.

Installation is possible not only in concrete but also in prefabricated channel plates (C45/55), provided the lower plate thickness is at least 35 mm. No special tools are required beyond a standard SDS+ drill and an SW10 wrench.

Why choose this specific model?

• M6 thread – no need to purchase additional intermediary parts; nuts can be tightened directly.

• Length 155 mm – ideal for thick walls or when a greater distance from the surface is needed.

• Integrated washer – prevents rotation and distributes load.

• Reusable installation – the system does not need to be replaced after removal.

• Compliance with ETA/CNBOP standards – not only “works”, but its strength is certified.