• Maintains high clamp load and thereby ensures the function of the joint • Quick and easy to install and remove with standard tools • Locking function not affected by lubrication • Defined and uniform friction conditions which result in a more accurate pre-load • Same temperature characteristics as standard bolt / nut • Reusable - do not affect the reusability of fasteners • The washers are hardened and can support and distribute great loads • High corrosion resistance • Can be used with fasteners up to grade 12.9 (ASTM A574) • Reliable locking, even for joints with short clamp length • Secures fasteners at both high and low pre-loads • No retightening needed • Verifiable locking function • Minimum 600 hours in salt spray test