EJOT ALtracs® Self-tapping fastener for lightweight metal EJOT ALtracs® screws are fasteners specially developed to maximize the strength of light alloy assemblies. Characteristics: - flank angle of 33° - compatible with metric fasteners - circular thread cross section - deformed thread forming zone Advantages of the EJOT ALtracs® screw - high joint-strength - safety against dynamic loss - consistently high clamp loads - easy assembly and application and a low drive torque - high stripping torque