Concrete screw | TXP | A4
If you need a concrete screw for installation without a plug in damp, salty, or chemically demanding environments, the A4 Stainless Steel Concrete Screw TXP is an excellent choice.
The screw is manufactured from acid-proof A4 / AISI 316 steel and developed for secure fastening in aggressive environments such as coastal structures, industrial facilities, or wet rooms.
It features a pan head with a TX (Torx) drive, which provides optimal grip during installation and a clean, low-profile, and rounded finish against the surface. The cutting thread enables direct fastening into a pre-drilled hole—completely without a plug—resulting in quick and efficient installation. The product is sold individually.
AREA OF APPLICATION
A4 Concrete Screw TXP is used for anchoring railings, fittings, brackets, ventilation components, signs, and machine parts into concrete.
It is particularly well-suited for marine environments, chemically exposed premises, food production areas, and wet rooms where high corrosion resistance is required.
The screw provides a strong, vibration-resistant, and non-expanding anchorage that does not put the same stress on the concrete as expansion anchors.
Easily installed with a TX bit and requires pre-drilling. Suitable for both cracked and non-cracked concrete.
TECHNICAL SPECIFICATIONS
Product type: Concrete screw
Standard: Not specified
Quality: A4 / AISI 316 (acid-proof stainless steel)
Material class: A4-80
Thread type: Cutting thread for concrete
Surface treatment: Untreated (natural-colored stainless steel)
Head shape: Pan head with TX drive
Drive type: Internal TX (Torx)
FREQUENTLY ASKED QUESTIONS (FAQ)
How does direct fastening with concrete screws without a plug work?
The concrete screw is equipped with a specially designed, hardened thread that cuts its own grooves directly into the pre-drilled hole in concrete, brick, or hollow blocks. This eliminates the need for plastic plugs, which significantly shortens installation time, provides immediate load-bearing capacity, and allows for mounting near edges, as the screw does not create the same expanding bursting force in the substrate as traditional expansion bolts.
Why is acid-proof A4 / AISI 316 the right material choice for outdoor concrete screws?
Acid-proof A4 steel (AISI 316 / 1.4401) contains molybdenum, which provides maximum corrosion protection against chlorides, salt water, road salt, and aggressive industrial chemicals. This makes the screw ideal for permanent and secure fastening in coastal facades, tunnels, wash halls, the food industry, and other highly corrosive outdoor environments where standard galvanized or A2 screws risk corrosion over time.
What advantages does the TXP head provide during installation and finishing?
The pan head (TXP) distributes clamping force evenly across the component being mounted and provides a clean, low-profile, and rounded finish without sharp edges. The integrated TX (Torx) drive ensures maximum power transmission from the impact driver, which reduces the risk of the bit slipping and damaging the drive during the high torque loads that occur when the thread cuts into the concrete.