With the Spax Spax-RA frame screw, you install window and door frames quickly and completely stress-free. Thanks to its 7.5 x 210 mm full-thread design, you anchor frame profiles directly into masonry, concrete, or timber without wall plugs, preventing frame distortion. The flat countersunk head finishes flush with the surface for a clean result. During installation, the t-star plus T30 drive ensures optimal torque transmission and eliminates bit slippage. Engineered with durable steel and the protective Wirox coating, this screw delivers superior corrosion resistance for reliable framing projects.