Concrete screw BTS M 14-130/15 with hex-head is suitable for the use in fresh concrete (cracked and non-cracked) and for outdoor applications like inclined supports, guardrails and scaffoldings. The special concrete screw BTS M is used especially for temporary fixings and can be reused several times. One tube gaube is included in every box. With the supplied tube gauge you can check the reusability (The BTS M may only be reused if max. 3 threads con penetrate into the tube gauge). The zinc flake coated concrete screw has a head-Ø of 32 mm.